diff --git a/android-app-core/AndroidManifest.xml b/android-app-core/AndroidManifest.xml
index a86dbd76..a755358f 100644
--- a/android-app-core/AndroidManifest.xml
+++ b/android-app-core/AndroidManifest.xml
@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-	package="org.solovyev.android.calculator.core"
-	android:versionCode="1"
-	android:versionName="1.0" >
+		  package="org.solovyev.android.calculator.core"
+		  android:versionCode="1"
+		  android:versionName="1.0">
 
 	<uses-sdk
-		android:minSdkVersion="4"
-		android:targetSdkVersion="17" />
+			android:minSdkVersion="4"
+			android:targetSdkVersion="17"/>
 
 </manifest>
\ No newline at end of file
diff --git a/android-app-core/pom.xml b/android-app-core/pom.xml
index e1f82e7e..0b843f0a 100644
--- a/android-app-core/pom.xml
+++ b/android-app-core/pom.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<parent>
diff --git a/android-app-core/res/drawable/blue_button.xml b/android-app-core/res/drawable/blue_button.xml
index 3f190da7..2908509f 100644
--- a/android-app-core/res/drawable/blue_button.xml
+++ b/android-app-core/res/drawable/blue_button.xml
@@ -1,9 +1,31 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <selector xmlns:a="http://schemas.android.com/apk/res/android">
 
-	<item a:state_pressed="true" a:drawable="@drawable/metro_button_pressed" />
+	<item a:state_pressed="true" a:drawable="@drawable/metro_button_pressed"/>
 
-	<item a:drawable="@drawable/blue_button_shape" />
+	<item a:drawable="@drawable/blue_button_shape"/>
 
 </selector>
\ No newline at end of file
diff --git a/android-app-core/res/drawable/blue_button_dark.xml b/android-app-core/res/drawable/blue_button_dark.xml
index 38247e80..9301f26d 100644
--- a/android-app-core/res/drawable/blue_button_dark.xml
+++ b/android-app-core/res/drawable/blue_button_dark.xml
@@ -1,9 +1,31 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <selector xmlns:a="http://schemas.android.com/apk/res/android">
 
-	<item a:state_pressed="true" a:drawable="@drawable/metro_button_pressed" />
+	<item a:state_pressed="true" a:drawable="@drawable/metro_button_pressed"/>
 
-	<item a:drawable="@drawable/blue_button_dark_shape" />
+	<item a:drawable="@drawable/blue_button_dark_shape"/>
 
 </selector>
\ No newline at end of file
diff --git a/android-app-core/res/drawable/blue_button_dark_shape.xml b/android-app-core/res/drawable/blue_button_dark_shape.xml
index 153639d6..77ffecfd 100644
--- a/android-app-core/res/drawable/blue_button_dark_shape.xml
+++ b/android-app-core/res/drawable/blue_button_dark_shape.xml
@@ -1,15 +1,31 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <shape xmlns:a="http://schemas.android.com/apk/res/android">
 	<gradient
-		a:startColor="#000d1f"
-		a:endColor="#002255"
-		a:angle="90" />
-	<corners a:radius="0dp" />
+			a:startColor="#000d1f"
+			a:endColor="#002255"
+			a:angle="90"/>
+	<corners a:radius="0dp"/>
 </shape>
diff --git a/android-app-core/res/drawable/blue_button_shape.xml b/android-app-core/res/drawable/blue_button_shape.xml
index fd8acd78..2f27a937 100644
--- a/android-app-core/res/drawable/blue_button_shape.xml
+++ b/android-app-core/res/drawable/blue_button_shape.xml
@@ -1,9 +1,31 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <shape xmlns:a="http://schemas.android.com/apk/res/android">
 	<gradient
-		a:startColor="#001c45"
-		a:endColor="#003481"
-		a:angle="90" />
-	<corners a:radius="0dp" />
+			a:startColor="#001c45"
+			a:endColor="#003481"
+			a:angle="90"/>
+	<corners a:radius="0dp"/>
 </shape>
diff --git a/android-app-core/res/drawable/default_abs__btn_cab_done_holo_dark.xml b/android-app-core/res/drawable/default_abs__btn_cab_done_holo_dark.xml
index c029d95c..c4410967 100644
--- a/android-app-core/res/drawable/default_abs__btn_cab_done_holo_dark.xml
+++ b/android-app-core/res/drawable/default_abs__btn_cab_done_holo_dark.xml
@@ -1,20 +1,28 @@
-<?xml version="1.0" encoding="utf-8"?><!-- Copyright (C) 2011 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
 
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
-	<item android:state_pressed="true" android:drawable="@drawable/default_abs__btn_cab_done_pressed_holo_dark" />
-	<item android:state_focused="true" android:state_enabled="true" android:drawable="@drawable/default_abs__btn_cab_done_focused_holo_dark" />
-	<item android:state_enabled="true" android:drawable="@drawable/default_abs__btn_cab_done_default_holo_dark" />
+	<item android:state_pressed="true" android:drawable="@drawable/default_abs__btn_cab_done_pressed_holo_dark"/>
+	<item android:state_focused="true" android:state_enabled="true"
+		  android:drawable="@drawable/default_abs__btn_cab_done_focused_holo_dark"/>
+	<item android:state_enabled="true" android:drawable="@drawable/default_abs__btn_cab_done_default_holo_dark"/>
 </selector>
diff --git a/android-app-core/res/drawable/default_abs__item_background_holo_dark.xml b/android-app-core/res/drawable/default_abs__item_background_holo_dark.xml
index eb72d05b..0998eb96 100644
--- a/android-app-core/res/drawable/default_abs__item_background_holo_dark.xml
+++ b/android-app-core/res/drawable/default_abs__item_background_holo_dark.xml
@@ -1,25 +1,36 @@
-<?xml version="1.0" encoding="utf-8"?><!-- Copyright (C) 2010 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
 
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
 
 	<!-- Even though these two point to the same resource, have two states so the drawable will invalidate itself when coming out of pressed state. -->
-	<item android:state_focused="true" android:state_enabled="false" android:state_pressed="true" android:drawable="@drawable/abs__list_selector_disabled_holo_dark" />
-	<item android:state_focused="true" android:state_enabled="false" android:drawable="@drawable/abs__list_selector_disabled_holo_dark" />
-	<item android:state_focused="true" android:state_pressed="true" android:drawable="@drawable/default_abs__list_selector_background_transition_holo_dark" />
-	<item android:state_focused="false" android:state_pressed="true" android:drawable="@drawable/default_abs__list_selector_background_transition_holo_dark" />
-	<item android:state_focused="true" android:drawable="@drawable/default_abs__list_focused_holo" />
-	<item android:drawable="@android:color/transparent" />
+	<item android:state_focused="true" android:state_enabled="false" android:state_pressed="true"
+		  android:drawable="@drawable/abs__list_selector_disabled_holo_dark"/>
+	<item android:state_focused="true" android:state_enabled="false"
+		  android:drawable="@drawable/abs__list_selector_disabled_holo_dark"/>
+	<item android:state_focused="true" android:state_pressed="true"
+		  android:drawable="@drawable/default_abs__list_selector_background_transition_holo_dark"/>
+	<item android:state_focused="false" android:state_pressed="true"
+		  android:drawable="@drawable/default_abs__list_selector_background_transition_holo_dark"/>
+	<item android:state_focused="true" android:drawable="@drawable/default_abs__list_focused_holo"/>
+	<item android:drawable="@android:color/transparent"/>
 </selector>
diff --git a/android-app-core/res/drawable/default_abs__list_selector_background_transition_holo_dark.xml b/android-app-core/res/drawable/default_abs__list_selector_background_transition_holo_dark.xml
index c9f87b73..44f03a67 100644
--- a/android-app-core/res/drawable/default_abs__list_selector_background_transition_holo_dark.xml
+++ b/android-app-core/res/drawable/default_abs__list_selector_background_transition_holo_dark.xml
@@ -1,19 +1,26 @@
-<?xml version="1.0" encoding="utf-8"?><!-- Copyright (C) 2010 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
 
 <transition xmlns:android="http://schemas.android.com/apk/res/android">
-	<item android:drawable="@drawable/default_abs__list_pressed_holo_dark" />
-	<item android:drawable="@drawable/default_abs__list_longpressed_holo" />
+	<item android:drawable="@drawable/default_abs__list_pressed_holo_dark"/>
+	<item android:drawable="@drawable/default_abs__list_longpressed_holo"/>
 </transition>
diff --git a/android-app-core/res/drawable/default_abs__list_selector_holo_dark.xml b/android-app-core/res/drawable/default_abs__list_selector_holo_dark.xml
index 619ff9d3..dd385175 100644
--- a/android-app-core/res/drawable/default_abs__list_selector_holo_dark.xml
+++ b/android-app-core/res/drawable/default_abs__list_selector_holo_dark.xml
@@ -1,26 +1,37 @@
-<?xml version="1.0" encoding="utf-8"?><!-- Copyright (C) 2010 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
 
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
 
-	<item android:state_window_focused="false" android:drawable="@android:color/transparent" />
+	<item android:state_window_focused="false" android:drawable="@android:color/transparent"/>
 
 	<!-- Even though these two point to the same resource, have two states so the drawable will invalidate itself when coming out of pressed state. -->
-	<item android:state_focused="true" android:state_enabled="false" android:state_pressed="true" android:drawable="@drawable/abs__list_selector_disabled_holo_dark" />
-	<item android:state_focused="true" android:state_enabled="false" android:drawable="@drawable/abs__list_selector_disabled_holo_dark" />
-	<item android:state_focused="true" android:state_pressed="true" android:drawable="@drawable/default_abs__list_selector_background_transition_holo_dark" />
-	<item android:state_focused="false" android:state_pressed="true" android:drawable="@drawable/default_abs__list_selector_background_transition_holo_dark" />
-	<item android:state_focused="true" android:drawable="@drawable/default_abs__list_focused_holo" />
+	<item android:state_focused="true" android:state_enabled="false" android:state_pressed="true"
+		  android:drawable="@drawable/abs__list_selector_disabled_holo_dark"/>
+	<item android:state_focused="true" android:state_enabled="false"
+		  android:drawable="@drawable/abs__list_selector_disabled_holo_dark"/>
+	<item android:state_focused="true" android:state_pressed="true"
+		  android:drawable="@drawable/default_abs__list_selector_background_transition_holo_dark"/>
+	<item android:state_focused="false" android:state_pressed="true"
+		  android:drawable="@drawable/default_abs__list_selector_background_transition_holo_dark"/>
+	<item android:state_focused="true" android:drawable="@drawable/default_abs__list_focused_holo"/>
 </selector>
diff --git a/android-app-core/res/drawable/default_abs__spinner_ab_holo_dark.xml b/android-app-core/res/drawable/default_abs__spinner_ab_holo_dark.xml
index 4cda1e26..6c43f18a 100644
--- a/android-app-core/res/drawable/default_abs__spinner_ab_holo_dark.xml
+++ b/android-app-core/res/drawable/default_abs__spinner_ab_holo_dark.xml
@@ -1,21 +1,29 @@
-<?xml version="1.0" encoding="utf-8"?><!-- Copyright (C) 2011 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
 
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
-	<item android:state_enabled="false" android:drawable="@drawable/abs__spinner_ab_disabled_holo_dark" />
-	<item android:state_pressed="true" android:drawable="@drawable/default_abs__spinner_ab_pressed_holo_dark" />
-	<item android:state_pressed="false" android:state_focused="true" android:drawable="@drawable/default_abs__spinner_ab_focused_holo_dark" />
-	<item android:drawable="@drawable/abs__spinner_ab_default_holo_dark" />
+	<item android:state_enabled="false" android:drawable="@drawable/abs__spinner_ab_disabled_holo_dark"/>
+	<item android:state_pressed="true" android:drawable="@drawable/default_abs__spinner_ab_pressed_holo_dark"/>
+	<item android:state_pressed="false" android:state_focused="true"
+		  android:drawable="@drawable/default_abs__spinner_ab_focused_holo_dark"/>
+	<item android:drawable="@drawable/abs__spinner_ab_default_holo_dark"/>
 </selector>
diff --git a/android-app-core/res/drawable/default_abs__tab_indicator_ab_holo.xml b/android-app-core/res/drawable/default_abs__tab_indicator_ab_holo.xml
index e538a5f4..f9a720b6 100644
--- a/android-app-core/res/drawable/default_abs__tab_indicator_ab_holo.xml
+++ b/android-app-core/res/drawable/default_abs__tab_indicator_ab_holo.xml
@@ -1,33 +1,48 @@
-<?xml version="1.0" encoding="utf-8"?><!-- Copyright (C) 2011 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
 
 <selector xmlns:a="http://schemas.android.com/apk/res/android">
 	<!-- Non focused states -->
-	<item a:state_focused="false" a:state_selected="false" a:state_pressed="false" a:drawable="@android:color/transparent" />
-	<item a:state_focused="false" a:state_selected="true" a:state_pressed="false" a:drawable="@drawable/default_abs__tab_selected_holo" />
+	<item a:state_focused="false" a:state_selected="false" a:state_pressed="false"
+		  a:drawable="@android:color/transparent"/>
+	<item a:state_focused="false" a:state_selected="true" a:state_pressed="false"
+		  a:drawable="@drawable/default_abs__tab_selected_holo"/>
 
 	<!-- Focused states -->
-	<item a:state_focused="true" a:state_selected="false" a:state_pressed="false" a:drawable="@drawable/default_abs__list_focused_holo" />
-	<item a:state_focused="true" a:state_selected="true" a:state_pressed="false" a:drawable="@drawable/default_abs__tab_selected_focused_holo" />
+	<item a:state_focused="true" a:state_selected="false" a:state_pressed="false"
+		  a:drawable="@drawable/default_abs__list_focused_holo"/>
+	<item a:state_focused="true" a:state_selected="true" a:state_pressed="false"
+		  a:drawable="@drawable/default_abs__tab_selected_focused_holo"/>
 
 	<!-- Pressed -->
 	<!--    Non focused states -->
-	<item a:state_focused="false" a:state_selected="false" a:state_pressed="true" a:drawable="@drawable/default_abs__list_pressed_holo_dark" />
-	<item a:state_focused="false" a:state_selected="true" a:state_pressed="true" a:drawable="@drawable/default_abs__tab_selected_pressed_holo" />
+	<item a:state_focused="false" a:state_selected="false" a:state_pressed="true"
+		  a:drawable="@drawable/default_abs__list_pressed_holo_dark"/>
+	<item a:state_focused="false" a:state_selected="true" a:state_pressed="true"
+		  a:drawable="@drawable/default_abs__tab_selected_pressed_holo"/>
 
 	<!--    Focused states -->
-	<item a:state_focused="true" a:state_selected="false" a:state_pressed="true" a:drawable="@drawable/default_abs__tab_unselected_pressed_holo" />
-	<item a:state_focused="true" a:state_selected="true" a:state_pressed="true" a:drawable="@drawable/default_abs__tab_selected_pressed_holo" />
+	<item a:state_focused="true" a:state_selected="false" a:state_pressed="true"
+		  a:drawable="@drawable/default_abs__tab_unselected_pressed_holo"/>
+	<item a:state_focused="true" a:state_selected="true" a:state_pressed="true"
+		  a:drawable="@drawable/default_abs__tab_selected_pressed_holo"/>
 </selector>
diff --git a/android-app-core/res/drawable/gray_button.xml b/android-app-core/res/drawable/gray_button.xml
index 967fbfc0..9ceef380 100644
--- a/android-app-core/res/drawable/gray_button.xml
+++ b/android-app-core/res/drawable/gray_button.xml
@@ -1,9 +1,31 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <selector xmlns:a="http://schemas.android.com/apk/res/android">
 
-	<item a:state_pressed="true" a:drawable="@drawable/metro_button_pressed" />
+	<item a:state_pressed="true" a:drawable="@drawable/metro_button_pressed"/>
 
-	<item a:drawable="@drawable/gray_button_shape" />
+	<item a:drawable="@drawable/gray_button_shape"/>
 
 </selector>
\ No newline at end of file
diff --git a/android-app-core/res/drawable/gray_button_dark.xml b/android-app-core/res/drawable/gray_button_dark.xml
index 4c45b348..35f16cb9 100644
--- a/android-app-core/res/drawable/gray_button_dark.xml
+++ b/android-app-core/res/drawable/gray_button_dark.xml
@@ -1,9 +1,31 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <selector xmlns:a="http://schemas.android.com/apk/res/android">
 
-	<item a:state_pressed="true" a:drawable="@drawable/metro_button_pressed" />
+	<item a:state_pressed="true" a:drawable="@drawable/metro_button_pressed"/>
 
-	<item a:drawable="@drawable/gray_button_dark_shape" />
+	<item a:drawable="@drawable/gray_button_dark_shape"/>
 
 </selector>
\ No newline at end of file
diff --git a/android-app-core/res/drawable/gray_button_dark_shape.xml b/android-app-core/res/drawable/gray_button_dark_shape.xml
index 6545aa5a..09c8dab8 100644
--- a/android-app-core/res/drawable/gray_button_dark_shape.xml
+++ b/android-app-core/res/drawable/gray_button_dark_shape.xml
@@ -1,9 +1,31 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <shape xmlns:a="http://schemas.android.com/apk/res/android">
 	<gradient
-		a:startColor="#000000"
-		a:endColor="#333333"
-		a:angle="90" />
-	<corners a:radius="0dp" />
+			a:startColor="#000000"
+			a:endColor="#333333"
+			a:angle="90"/>
+	<corners a:radius="0dp"/>
 </shape>
diff --git a/android-app-core/res/drawable/gray_button_shape.xml b/android-app-core/res/drawable/gray_button_shape.xml
index 1710094b..0ebdbe72 100644
--- a/android-app-core/res/drawable/gray_button_shape.xml
+++ b/android-app-core/res/drawable/gray_button_shape.xml
@@ -1,9 +1,31 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <shape xmlns:a="http://schemas.android.com/apk/res/android">
 	<gradient
-		a:startColor="#071622"
-		a:endColor="#253541"
-		a:angle="90" />
-	<corners a:radius="0dp" />
+			a:startColor="#071622"
+			a:endColor="#253541"
+			a:angle="90"/>
+	<corners a:radius="0dp"/>
 </shape>
diff --git a/android-app-core/res/drawable/metro_blue_abs__tab_indicator_ab_holo.xml b/android-app-core/res/drawable/metro_blue_abs__tab_indicator_ab_holo.xml
index 75077a99..71ae4541 100644
--- a/android-app-core/res/drawable/metro_blue_abs__tab_indicator_ab_holo.xml
+++ b/android-app-core/res/drawable/metro_blue_abs__tab_indicator_ab_holo.xml
@@ -1,33 +1,48 @@
-<?xml version="1.0" encoding="utf-8"?><!-- Copyright (C) 2011 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
 
 <selector xmlns:a="http://schemas.android.com/apk/res/android">
 	<!-- Non focused states -->
-	<item a:state_focused="false" a:state_selected="false" a:state_pressed="false" a:drawable="@android:color/transparent" />
-	<item a:state_focused="false" a:state_selected="true" a:state_pressed="false" a:drawable="@drawable/metro_blue_abs__tab_selected_holo" />
+	<item a:state_focused="false" a:state_selected="false" a:state_pressed="false"
+		  a:drawable="@android:color/transparent"/>
+	<item a:state_focused="false" a:state_selected="true" a:state_pressed="false"
+		  a:drawable="@drawable/metro_blue_abs__tab_selected_holo"/>
 
 	<!-- Focused states -->
-	<item a:state_focused="true" a:state_selected="false" a:state_pressed="false" a:drawable="@drawable/metro_blue_abs__list_focused_holo" />
-	<item a:state_focused="true" a:state_selected="true" a:state_pressed="false" a:drawable="@drawable/metro_blue_abs__tab_selected_focused_holo" />
+	<item a:state_focused="true" a:state_selected="false" a:state_pressed="false"
+		  a:drawable="@drawable/metro_blue_abs__list_focused_holo"/>
+	<item a:state_focused="true" a:state_selected="true" a:state_pressed="false"
+		  a:drawable="@drawable/metro_blue_abs__tab_selected_focused_holo"/>
 
 	<!-- Pressed -->
 	<!--    Non focused states -->
-	<item a:state_focused="false" a:state_selected="false" a:state_pressed="true" a:drawable="@drawable/metro_blue_abs__list_pressed_holo_dark" />
-	<item a:state_focused="false" a:state_selected="true" a:state_pressed="true" a:drawable="@drawable/metro_blue_abs__tab_selected_pressed_holo" />
+	<item a:state_focused="false" a:state_selected="false" a:state_pressed="true"
+		  a:drawable="@drawable/metro_blue_abs__list_pressed_holo_dark"/>
+	<item a:state_focused="false" a:state_selected="true" a:state_pressed="true"
+		  a:drawable="@drawable/metro_blue_abs__tab_selected_pressed_holo"/>
 
 	<!--    Focused states -->
-	<item a:state_focused="true" a:state_selected="false" a:state_pressed="true" a:drawable="@drawable/metro_blue_abs__tab_unselected_pressed_holo" />
-	<item a:state_focused="true" a:state_selected="true" a:state_pressed="true" a:drawable="@drawable/metro_blue_abs__tab_selected_pressed_holo" />
+	<item a:state_focused="true" a:state_selected="false" a:state_pressed="true"
+		  a:drawable="@drawable/metro_blue_abs__tab_unselected_pressed_holo"/>
+	<item a:state_focused="true" a:state_selected="true" a:state_pressed="true"
+		  a:drawable="@drawable/metro_blue_abs__tab_selected_pressed_holo"/>
 </selector>
diff --git a/android-app-core/res/drawable/metro_blue_button.xml b/android-app-core/res/drawable/metro_blue_button.xml
index a638c635..0101d679 100644
--- a/android-app-core/res/drawable/metro_blue_button.xml
+++ b/android-app-core/res/drawable/metro_blue_button.xml
@@ -1,9 +1,31 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <selector xmlns:a="http://schemas.android.com/apk/res/android">
 
-	<item a:state_pressed="true" a:drawable="@drawable/metro_button_pressed" />
+	<item a:state_pressed="true" a:drawable="@drawable/metro_button_pressed"/>
 
-	<item a:drawable="@drawable/metro_blue_button_shape" />
+	<item a:drawable="@drawable/metro_blue_button_shape"/>
 
 </selector>
\ No newline at end of file
diff --git a/android-app-core/res/drawable/metro_blue_button_shape.xml b/android-app-core/res/drawable/metro_blue_button_shape.xml
index e6fc3fc1..d888ae92 100644
--- a/android-app-core/res/drawable/metro_blue_button_shape.xml
+++ b/android-app-core/res/drawable/metro_blue_button_shape.xml
@@ -1,19 +1,26 @@
-<?xml version="1.0" encoding="utf-8"?><!-- Copyright (C) 2007 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
 
 <shape xmlns:android="http://schemas.android.com/apk/res/android">
-	<solid android:color="@color/cpp_metro_blue_color" />
-	<corners android:radius="1dp" />
+	<solid android:color="@color/cpp_metro_blue_color"/>
+	<corners android:radius="1dp"/>
 </shape>
\ No newline at end of file
diff --git a/android-app-core/res/drawable/metro_blue_list_item.xml b/android-app-core/res/drawable/metro_blue_list_item.xml
index 21559be3..cbc7a037 100644
--- a/android-app-core/res/drawable/metro_blue_list_item.xml
+++ b/android-app-core/res/drawable/metro_blue_list_item.xml
@@ -1,21 +1,51 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <selector xmlns:a="http://schemas.android.com/apk/res/android">
 	<!-- Non focused states -->
-	<item a:state_focused="false" a:state_selected="false" a:state_pressed="false" a:drawable="@android:color/transparent" />
-	<item a:state_focused="false" a:state_selected="true" a:state_pressed="false" a:drawable="@color/cpp_metro_blue_color" />
+	<item a:state_focused="false" a:state_selected="false" a:state_pressed="false"
+		  a:drawable="@android:color/transparent"/>
+	<item a:state_focused="false" a:state_selected="true" a:state_pressed="false"
+		  a:drawable="@color/cpp_metro_blue_color"/>
 
 	<!-- Focused states -->
-	<item a:state_focused="true" a:state_selected="false" a:state_pressed="false" a:drawable="@color/cpp_metro_blue_color" />
-	<item a:state_focused="true" a:state_selected="true" a:state_pressed="false" a:drawable="@color/cpp_metro_blue_color" />
+	<item a:state_focused="true" a:state_selected="false" a:state_pressed="false"
+		  a:drawable="@color/cpp_metro_blue_color"/>
+	<item a:state_focused="true" a:state_selected="true" a:state_pressed="false"
+		  a:drawable="@color/cpp_metro_blue_color"/>
 
 	<!-- Pressed -->
 	<!--    Non focused states -->
-	<item a:state_focused="false" a:state_selected="false" a:state_pressed="true" a:drawable="@color/cpp_metro_blue_color" />
-	<item a:state_focused="false" a:state_selected="true" a:state_pressed="true" a:drawable="@color/cpp_metro_blue_color" />
+	<item a:state_focused="false" a:state_selected="false" a:state_pressed="true"
+		  a:drawable="@color/cpp_metro_blue_color"/>
+	<item a:state_focused="false" a:state_selected="true" a:state_pressed="true"
+		  a:drawable="@color/cpp_metro_blue_color"/>
 
 	<!--    Focused states -->
-	<item a:state_focused="true" a:state_selected="false" a:state_pressed="true" a:drawable="@color/cpp_metro_blue_color" />
-	<item a:state_focused="true" a:state_selected="true" a:state_pressed="true" a:drawable="@color/cpp_metro_blue_color" />
+	<item a:state_focused="true" a:state_selected="false" a:state_pressed="true"
+		  a:drawable="@color/cpp_metro_blue_color"/>
+	<item a:state_focused="true" a:state_selected="true" a:state_pressed="true"
+		  a:drawable="@color/cpp_metro_blue_color"/>
 </selector>
diff --git a/android-app-core/res/drawable/metro_button_dark.xml b/android-app-core/res/drawable/metro_button_dark.xml
index 01eecc9c..cbaae7b8 100644
--- a/android-app-core/res/drawable/metro_button_dark.xml
+++ b/android-app-core/res/drawable/metro_button_dark.xml
@@ -1,8 +1,30 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <selector xmlns:a="http://schemas.android.com/apk/res/android">
 
-	<item a:state_pressed="true" a:drawable="@drawable/metro_button_pressed" />
+	<item a:state_pressed="true" a:drawable="@drawable/metro_button_pressed"/>
 
-	<item a:drawable="@drawable/metro_button_dark_shape" />
+	<item a:drawable="@drawable/metro_button_dark_shape"/>
 </selector>
\ No newline at end of file
diff --git a/android-app-core/res/drawable/metro_button_dark_shape.xml b/android-app-core/res/drawable/metro_button_dark_shape.xml
index 3f06ca5b..2165b29a 100644
--- a/android-app-core/res/drawable/metro_button_dark_shape.xml
+++ b/android-app-core/res/drawable/metro_button_dark_shape.xml
@@ -1,19 +1,26 @@
-<?xml version="1.0" encoding="utf-8"?><!-- Copyright (C) 2007 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
 
 <shape xmlns:android="http://schemas.android.com/apk/res/android">
-	<solid android:color="@color/cpp_metro_button_background" />
-	<corners android:radius="1dp" />
+	<solid android:color="@color/cpp_metro_button_background"/>
+	<corners android:radius="1dp"/>
 </shape>
\ No newline at end of file
diff --git a/android-app-core/res/drawable/metro_button_green.xml b/android-app-core/res/drawable/metro_button_green.xml
index 4fa1e269..78abe5d1 100644
--- a/android-app-core/res/drawable/metro_button_green.xml
+++ b/android-app-core/res/drawable/metro_button_green.xml
@@ -1,9 +1,31 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <selector xmlns:a="http://schemas.android.com/apk/res/android">
 
-	<item a:state_pressed="true" a:drawable="@drawable/metro_button_pressed" />
+	<item a:state_pressed="true" a:drawable="@drawable/metro_button_pressed"/>
 
-	<item a:drawable="@drawable/metro_button_green_shape" />
+	<item a:drawable="@drawable/metro_button_green_shape"/>
 
 </selector>
\ No newline at end of file
diff --git a/android-app-core/res/drawable/metro_button_green_shape.xml b/android-app-core/res/drawable/metro_button_green_shape.xml
index 01833fac..2887709b 100644
--- a/android-app-core/res/drawable/metro_button_green_shape.xml
+++ b/android-app-core/res/drawable/metro_button_green_shape.xml
@@ -1,19 +1,26 @@
-<?xml version="1.0" encoding="utf-8"?><!-- Copyright (C) 2007 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
 
 <shape xmlns:android="http://schemas.android.com/apk/res/android">
-	<solid android:color="@color/cpp_metro_green_color" />
-	<corners android:radius="1dp" />
+	<solid android:color="@color/cpp_metro_green_color"/>
+	<corners android:radius="1dp"/>
 </shape>
\ No newline at end of file
diff --git a/android-app-core/res/drawable/metro_button_light.xml b/android-app-core/res/drawable/metro_button_light.xml
index 1498b5aa..a4c0a22c 100644
--- a/android-app-core/res/drawable/metro_button_light.xml
+++ b/android-app-core/res/drawable/metro_button_light.xml
@@ -1,8 +1,30 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <selector xmlns:a="http://schemas.android.com/apk/res/android">
 
-	<item a:state_pressed="true" a:drawable="@drawable/metro_button_pressed" />
+	<item a:state_pressed="true" a:drawable="@drawable/metro_button_pressed"/>
 
-	<item a:drawable="@drawable/metro_button_light_shape" />
+	<item a:drawable="@drawable/metro_button_light_shape"/>
 </selector>
\ No newline at end of file
diff --git a/android-app-core/res/drawable/metro_button_light_shape.xml b/android-app-core/res/drawable/metro_button_light_shape.xml
index 32bbaf5c..78e13a77 100644
--- a/android-app-core/res/drawable/metro_button_light_shape.xml
+++ b/android-app-core/res/drawable/metro_button_light_shape.xml
@@ -1,19 +1,26 @@
-<?xml version="1.0" encoding="utf-8"?><!-- Copyright (C) 2007 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
 
 <shape xmlns:android="http://schemas.android.com/apk/res/android">
-	<solid android:color="@color/cpp_metro_light_button_background" />
-	<corners android:radius="1dp" />
+	<solid android:color="@color/cpp_metro_light_button_background"/>
+	<corners android:radius="1dp"/>
 </shape>
diff --git a/android-app-core/res/drawable/metro_button_pressed.xml b/android-app-core/res/drawable/metro_button_pressed.xml
index 386a4bad..72931a8f 100644
--- a/android-app-core/res/drawable/metro_button_pressed.xml
+++ b/android-app-core/res/drawable/metro_button_pressed.xml
@@ -1,19 +1,26 @@
-<?xml version="1.0" encoding="utf-8"?><!-- Copyright (C) 2007 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
 
 <shape xmlns:android="http://schemas.android.com/apk/res/android">
-	<solid android:color="#C9C9C9" />
-	<corners android:radius="1dp" />
+	<solid android:color="#C9C9C9"/>
+	<corners android:radius="1dp"/>
 </shape>
\ No newline at end of file
diff --git a/android-app-core/res/drawable/metro_button_purple.xml b/android-app-core/res/drawable/metro_button_purple.xml
index d5c51b1e..dbae4798 100644
--- a/android-app-core/res/drawable/metro_button_purple.xml
+++ b/android-app-core/res/drawable/metro_button_purple.xml
@@ -1,9 +1,31 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <selector xmlns:a="http://schemas.android.com/apk/res/android">
 
-	<item a:state_pressed="true" a:drawable="@drawable/metro_button_pressed" />
+	<item a:state_pressed="true" a:drawable="@drawable/metro_button_pressed"/>
 
-	<item a:drawable="@drawable/metro_button_purple_shape" />
+	<item a:drawable="@drawable/metro_button_purple_shape"/>
 
 </selector>
\ No newline at end of file
diff --git a/android-app-core/res/drawable/metro_button_purple_shape.xml b/android-app-core/res/drawable/metro_button_purple_shape.xml
index e50eab0f..a994ce3b 100644
--- a/android-app-core/res/drawable/metro_button_purple_shape.xml
+++ b/android-app-core/res/drawable/metro_button_purple_shape.xml
@@ -1,19 +1,26 @@
-<?xml version="1.0" encoding="utf-8"?><!-- Copyright (C) 2007 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
 
 <shape xmlns:android="http://schemas.android.com/apk/res/android">
-	<solid android:color="@color/cpp_metro_purple_color" />
-	<corners android:radius="1dp" />
+	<solid android:color="@color/cpp_metro_purple_color"/>
+	<corners android:radius="1dp"/>
 </shape>
\ No newline at end of file
diff --git a/android-app-core/res/drawable/metro_green_list_item.xml b/android-app-core/res/drawable/metro_green_list_item.xml
index e7292aa6..0ba94d5a 100644
--- a/android-app-core/res/drawable/metro_green_list_item.xml
+++ b/android-app-core/res/drawable/metro_green_list_item.xml
@@ -1,22 +1,52 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <selector xmlns:a="http://schemas.android.com/apk/res/android">
 	<!-- Non focused states -->
-	<item a:state_focused="false" a:state_selected="false" a:state_pressed="false" a:drawable="@android:color/transparent" />
-	<item a:state_focused="false" a:state_selected="true" a:state_pressed="false" a:drawable="@color/cpp_metro_green_color" />
+	<item a:state_focused="false" a:state_selected="false" a:state_pressed="false"
+		  a:drawable="@android:color/transparent"/>
+	<item a:state_focused="false" a:state_selected="true" a:state_pressed="false"
+		  a:drawable="@color/cpp_metro_green_color"/>
 
 	<!-- Focused states -->
-	<item a:state_focused="true" a:state_selected="false" a:state_pressed="false" a:drawable="@color/cpp_metro_green_color" />
-	<item a:state_focused="true" a:state_selected="true" a:state_pressed="false" a:drawable="@color/cpp_metro_green_color" />
+	<item a:state_focused="true" a:state_selected="false" a:state_pressed="false"
+		  a:drawable="@color/cpp_metro_green_color"/>
+	<item a:state_focused="true" a:state_selected="true" a:state_pressed="false"
+		  a:drawable="@color/cpp_metro_green_color"/>
 
 	<!-- Pressed -->
 	<!--    Non focused states -->
-	<item a:state_focused="false" a:state_selected="false" a:state_pressed="true" a:drawable="@color/cpp_metro_green_color" />
-	<item a:state_focused="false" a:state_selected="true" a:state_pressed="true" a:drawable="@color/cpp_metro_green_color" />
+	<item a:state_focused="false" a:state_selected="false" a:state_pressed="true"
+		  a:drawable="@color/cpp_metro_green_color"/>
+	<item a:state_focused="false" a:state_selected="true" a:state_pressed="true"
+		  a:drawable="@color/cpp_metro_green_color"/>
 
 	<!--    Focused states -->
-	<item a:state_focused="true" a:state_selected="false" a:state_pressed="true" a:drawable="@color/cpp_metro_green_color" />
-	<item a:state_focused="true" a:state_selected="true" a:state_pressed="true" a:drawable="@color/cpp_metro_green_color" />
+	<item a:state_focused="true" a:state_selected="false" a:state_pressed="true"
+		  a:drawable="@color/cpp_metro_green_color"/>
+	<item a:state_focused="true" a:state_selected="true" a:state_pressed="true"
+		  a:drawable="@color/cpp_metro_green_color"/>
 
 </selector>
diff --git a/android-app-core/res/drawable/metro_purple_list_item.xml b/android-app-core/res/drawable/metro_purple_list_item.xml
index 34bbe728..0c54af47 100644
--- a/android-app-core/res/drawable/metro_purple_list_item.xml
+++ b/android-app-core/res/drawable/metro_purple_list_item.xml
@@ -1,21 +1,51 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <selector xmlns:a="http://schemas.android.com/apk/res/android">
 	<!-- Non focused states -->
-	<item a:state_focused="false" a:state_selected="false" a:state_pressed="false" a:drawable="@android:color/transparent" />
-	<item a:state_focused="false" a:state_selected="true" a:state_pressed="false" a:drawable="@color/cpp_metro_purple_color" />
+	<item a:state_focused="false" a:state_selected="false" a:state_pressed="false"
+		  a:drawable="@android:color/transparent"/>
+	<item a:state_focused="false" a:state_selected="true" a:state_pressed="false"
+		  a:drawable="@color/cpp_metro_purple_color"/>
 
 	<!-- Focused states -->
-	<item a:state_focused="true" a:state_selected="false" a:state_pressed="false" a:drawable="@color/cpp_metro_purple_color" />
-	<item a:state_focused="true" a:state_selected="true" a:state_pressed="false" a:drawable="@color/cpp_metro_purple_color" />
+	<item a:state_focused="true" a:state_selected="false" a:state_pressed="false"
+		  a:drawable="@color/cpp_metro_purple_color"/>
+	<item a:state_focused="true" a:state_selected="true" a:state_pressed="false"
+		  a:drawable="@color/cpp_metro_purple_color"/>
 
 	<!-- Pressed -->
 	<!--    Non focused states -->
-	<item a:state_focused="false" a:state_selected="false" a:state_pressed="true" a:drawable="@color/cpp_metro_purple_color" />
-	<item a:state_focused="false" a:state_selected="true" a:state_pressed="true" a:drawable="@color/cpp_metro_purple_color" />
+	<item a:state_focused="false" a:state_selected="false" a:state_pressed="true"
+		  a:drawable="@color/cpp_metro_purple_color"/>
+	<item a:state_focused="false" a:state_selected="true" a:state_pressed="true"
+		  a:drawable="@color/cpp_metro_purple_color"/>
 
 	<!--    Focused states -->
-	<item a:state_focused="true" a:state_selected="false" a:state_pressed="true" a:drawable="@color/cpp_metro_purple_color" />
-	<item a:state_focused="true" a:state_selected="true" a:state_pressed="true" a:drawable="@color/cpp_metro_purple_color" />
+	<item a:state_focused="true" a:state_selected="false" a:state_pressed="true"
+		  a:drawable="@color/cpp_metro_purple_color"/>
+	<item a:state_focused="true" a:state_selected="true" a:state_pressed="true"
+		  a:drawable="@color/cpp_metro_purple_color"/>
 </selector>
diff --git a/android-app-core/res/drawable/pane_background.xml b/android-app-core/res/drawable/pane_background.xml
index 4058c468..23efe1bb 100644
--- a/android-app-core/res/drawable/pane_background.xml
+++ b/android-app-core/res/drawable/pane_background.xml
@@ -1,19 +1,26 @@
-<?xml version="1.0" encoding="utf-8"?><!-- Copyright (C) 2007 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
 
 <shape xmlns:android="http://schemas.android.com/apk/res/android">
-	<solid android:color="@color/cpp_pane_background" />
-	<corners android:radius="1dp" />
+	<solid android:color="@color/cpp_pane_background"/>
+	<corners android:radius="1dp"/>
 </shape>
\ No newline at end of file
diff --git a/android-app-core/res/drawable/violet_button.xml b/android-app-core/res/drawable/violet_button.xml
index 2f72752a..2113beb7 100644
--- a/android-app-core/res/drawable/violet_button.xml
+++ b/android-app-core/res/drawable/violet_button.xml
@@ -1,9 +1,31 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <selector xmlns:a="http://schemas.android.com/apk/res/android">
 
-	<item a:state_pressed="true" a:drawable="@drawable/metro_button_pressed" />
+	<item a:state_pressed="true" a:drawable="@drawable/metro_button_pressed"/>
 
-	<item a:drawable="@drawable/violet_button_shape" />
+	<item a:drawable="@drawable/violet_button_shape"/>
 
 </selector>
\ No newline at end of file
diff --git a/android-app-core/res/drawable/violet_button_dark.xml b/android-app-core/res/drawable/violet_button_dark.xml
index 2d1232c8..2d979c5e 100644
--- a/android-app-core/res/drawable/violet_button_dark.xml
+++ b/android-app-core/res/drawable/violet_button_dark.xml
@@ -1,9 +1,31 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <selector xmlns:a="http://schemas.android.com/apk/res/android">
 
-	<item a:state_pressed="true" a:drawable="@drawable/metro_button_pressed" />
+	<item a:state_pressed="true" a:drawable="@drawable/metro_button_pressed"/>
 
-	<item a:drawable="@drawable/violet_button_dark_shape" />
+	<item a:drawable="@drawable/violet_button_dark_shape"/>
 
 </selector>
\ No newline at end of file
diff --git a/android-app-core/res/drawable/violet_button_dark_shape.xml b/android-app-core/res/drawable/violet_button_dark_shape.xml
index 7409fe9c..5caaca03 100644
--- a/android-app-core/res/drawable/violet_button_dark_shape.xml
+++ b/android-app-core/res/drawable/violet_button_dark_shape.xml
@@ -1,15 +1,31 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <shape xmlns:a="http://schemas.android.com/apk/res/android">
 	<gradient
-		a:startColor="#2b0325"
-		a:endColor="#4f1c47"
-		a:angle="90" />
-	<corners a:radius="0dp" />
+			a:startColor="#2b0325"
+			a:endColor="#4f1c47"
+			a:angle="90"/>
+	<corners a:radius="0dp"/>
 </shape>
diff --git a/android-app-core/res/drawable/violet_button_shape.xml b/android-app-core/res/drawable/violet_button_shape.xml
index 4ef0e931..771c2f9b 100644
--- a/android-app-core/res/drawable/violet_button_shape.xml
+++ b/android-app-core/res/drawable/violet_button_shape.xml
@@ -1,15 +1,31 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <shape xmlns:a="http://schemas.android.com/apk/res/android">
 	<gradient
-		a:startColor="#520546"
-		a:endColor="#8a307c"
-		a:angle="90" />
-	<corners a:radius="0dp" />
+			a:startColor="#520546"
+			a:endColor="#8a307c"
+			a:angle="90"/>
+	<corners a:radius="0dp"/>
 </shape>
diff --git a/android-app-core/res/layout/cpp_fixable_messages_dialog.xml b/android-app-core/res/layout/cpp_fixable_messages_dialog.xml
index 333c2c04..77f3f036 100644
--- a/android-app-core/res/layout/cpp_fixable_messages_dialog.xml
+++ b/android-app-core/res/layout/cpp_fixable_messages_dialog.xml
@@ -1,31 +1,53 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	style="?cpp_dialog_style">
+			  style="?cpp_dialog_style">
 
 	<LinearLayout
-		a:id="@+id/cpp_fixable_messages_container"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:orientation="vertical" />
+			a:id="@+id/cpp_fixable_messages_container"
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content"
+			a:orientation="vertical"/>
 
 	<CheckBox
-		a:id="@+id/cpp_do_not_show_fixable_messages_checkbox"
-		a:text="@string/do_not_show_messages_in_session"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content" />
+			a:id="@+id/cpp_do_not_show_fixable_messages_checkbox"
+			a:text="@string/do_not_show_messages_in_session"
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content"/>
 
 	<LinearLayout
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:orientation="horizontal"
-		a:gravity="center">
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content"
+			a:orientation="horizontal"
+			a:gravity="center">
 
 		<Button
-			a:id="@+id/close_button"
-			a:layout_width="wrap_content"
-			a:layout_height="wrap_content"
-			a:text="@string/close" />
+				a:id="@+id/close_button"
+				a:layout_width="wrap_content"
+				a:layout_height="wrap_content"
+				a:text="@string/close"/>
 
 	</LinearLayout>
 
diff --git a/android-app-core/res/layout/cpp_fixable_messages_dialog_message.xml b/android-app-core/res/layout/cpp_fixable_messages_dialog_message.xml
index 243c6956..cc9b60e6 100644
--- a/android-app-core/res/layout/cpp_fixable_messages_dialog_message.xml
+++ b/android-app-core/res/layout/cpp_fixable_messages_dialog_message.xml
@@ -1,24 +1,46 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="wrap_content"
-	a:orientation="horizontal"
-	a:padding="6dp">
+			  a:layout_width="match_parent"
+			  a:layout_height="wrap_content"
+			  a:orientation="horizontal"
+			  a:padding="6dp">
 
 	<TextView
-		a:id="@+id/cpp_fixable_messages_text_view"
-		a:layout_width="0dp"
-		a:layout_height="wrap_content"
-		a:layout_weight="5"
-		a:layout_gravity="fill"
-		a:text="@+id/cpp_fixable_messages_text_view" />
+			a:id="@+id/cpp_fixable_messages_text_view"
+			a:layout_width="0dp"
+			a:layout_height="wrap_content"
+			a:layout_weight="5"
+			a:layout_gravity="fill"
+			a:text="@+id/cpp_fixable_messages_text_view"/>
 
 	<Button
-		a:id="@+id/cpp_fix_button"
-		a:layout_width="0dp"
-		a:layout_height="wrap_content"
-		a:layout_weight="2"
-		a:text="@string/fix" />
+			a:id="@+id/cpp_fix_button"
+			a:layout_width="0dp"
+			a:layout_height="wrap_content"
+			a:layout_weight="2"
+			a:text="@string/fix"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_0.xml b/android-app-core/res/layout/cpp_simple_button_0.xml
index 5c9fb014..d035e05b 100644
--- a/android-app-core/res/layout/cpp_simple_button_0.xml
+++ b/android-app-core/res/layout/cpp_simple_button_0.xml
@@ -1,12 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_0"
-	a:text="0"
-	style="@style/cpp_simple_metro_digit_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_0"
+		a:text="0"
+		style="@style/cpp_simple_metro_digit_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_1.xml b/android-app-core/res/layout/cpp_simple_button_1.xml
index f4324e2d..f67ba33c 100644
--- a/android-app-core/res/layout/cpp_simple_button_1.xml
+++ b/android-app-core/res/layout/cpp_simple_button_1.xml
@@ -1,12 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_1"
-	a:text="1"
-	style="@style/cpp_simple_metro_digit_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_1"
+		a:text="1"
+		style="@style/cpp_simple_metro_digit_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_2.xml b/android-app-core/res/layout/cpp_simple_button_2.xml
index e8ca564a..574c3219 100644
--- a/android-app-core/res/layout/cpp_simple_button_2.xml
+++ b/android-app-core/res/layout/cpp_simple_button_2.xml
@@ -1,12 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_2"
-	a:text="2"
-	style="@style/cpp_simple_metro_digit_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_2"
+		a:text="2"
+		style="@style/cpp_simple_metro_digit_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_3.xml b/android-app-core/res/layout/cpp_simple_button_3.xml
index b6e3142f..478d8499 100644
--- a/android-app-core/res/layout/cpp_simple_button_3.xml
+++ b/android-app-core/res/layout/cpp_simple_button_3.xml
@@ -1,12 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_3"
-	a:text="3"
-	style="@style/cpp_simple_metro_digit_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_3"
+		a:text="3"
+		style="@style/cpp_simple_metro_digit_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_4.xml b/android-app-core/res/layout/cpp_simple_button_4.xml
index d1a1f820..01ea63a7 100644
--- a/android-app-core/res/layout/cpp_simple_button_4.xml
+++ b/android-app-core/res/layout/cpp_simple_button_4.xml
@@ -1,11 +1,27 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_4"
-	a:text="4"
-	style="@style/cpp_simple_metro_digit_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_4"
+		a:text="4"
+		style="@style/cpp_simple_metro_digit_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_5.xml b/android-app-core/res/layout/cpp_simple_button_5.xml
index 43cdfd79..d3b13012 100644
--- a/android-app-core/res/layout/cpp_simple_button_5.xml
+++ b/android-app-core/res/layout/cpp_simple_button_5.xml
@@ -1,11 +1,27 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_5"
-	a:text="5"
-	style="@style/cpp_simple_metro_digit_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_5"
+		a:text="5"
+		style="@style/cpp_simple_metro_digit_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_6.xml b/android-app-core/res/layout/cpp_simple_button_6.xml
index a5d843ee..b1855117 100644
--- a/android-app-core/res/layout/cpp_simple_button_6.xml
+++ b/android-app-core/res/layout/cpp_simple_button_6.xml
@@ -1,12 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_6"
-	a:text="6"
-	style="@style/cpp_simple_metro_digit_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_6"
+		a:text="6"
+		style="@style/cpp_simple_metro_digit_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_7.xml b/android-app-core/res/layout/cpp_simple_button_7.xml
index 4a9d3f08..aea343b8 100644
--- a/android-app-core/res/layout/cpp_simple_button_7.xml
+++ b/android-app-core/res/layout/cpp_simple_button_7.xml
@@ -1,6 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_7"
-	a:text="7"
-	style="@style/cpp_simple_metro_digit_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_7"
+		a:text="7"
+		style="@style/cpp_simple_metro_digit_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_8.xml b/android-app-core/res/layout/cpp_simple_button_8.xml
index 05ad8463..635bbe36 100644
--- a/android-app-core/res/layout/cpp_simple_button_8.xml
+++ b/android-app-core/res/layout/cpp_simple_button_8.xml
@@ -1,12 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_8"
-	a:text="8"
-	style="@style/cpp_simple_metro_digit_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_8"
+		a:text="8"
+		style="@style/cpp_simple_metro_digit_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_9.xml b/android-app-core/res/layout/cpp_simple_button_9.xml
index a57aedb2..e0ae8c34 100644
--- a/android-app-core/res/layout/cpp_simple_button_9.xml
+++ b/android-app-core/res/layout/cpp_simple_button_9.xml
@@ -1,12 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_9"
-	a:text="9"
-	style="@style/cpp_simple_metro_digit_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_9"
+		a:text="9"
+		style="@style/cpp_simple_metro_digit_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_app.xml b/android-app-core/res/layout/cpp_simple_button_app.xml
index e56cd43d..66f58039 100644
--- a/android-app-core/res/layout/cpp_simple_button_app.xml
+++ b/android-app-core/res/layout/cpp_simple_button_app.xml
@@ -1,13 +1,29 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <ImageButton xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_app"
-	a:src="@drawable/kb_logo"
-	style="@style/cpp_simple_metro_control_image_button_style"
-	a:contentDescription="App" />
\ No newline at end of file
+			 a:id="@id/cpp_button_app"
+			 a:src="@drawable/kb_logo"
+			 style="@style/cpp_simple_metro_control_image_button_style"
+			 a:contentDescription="App"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_clear.xml b/android-app-core/res/layout/cpp_simple_button_clear.xml
index 470854c2..92b1a42c 100644
--- a/android-app-core/res/layout/cpp_simple_button_clear.xml
+++ b/android-app-core/res/layout/cpp_simple_button_clear.xml
@@ -1,13 +1,29 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_clear"
-	a:text="@string/c_clear"
-	a:textStyle="bold"
-	style="@style/cpp_simple_metro_control_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_clear"
+		a:text="@string/c_clear"
+		a:textStyle="bold"
+		style="@style/cpp_simple_metro_control_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_copy.xml b/android-app-core/res/layout/cpp_simple_button_copy.xml
index 810fb148..f8b02a21 100644
--- a/android-app-core/res/layout/cpp_simple_button_copy.xml
+++ b/android-app-core/res/layout/cpp_simple_button_copy.xml
@@ -1,13 +1,29 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <ImageButton xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_copy"
-	a:src="@drawable/kb_copy"
-	style="@style/cpp_simple_metro_control_image_button_style"
-	a:contentDescription="Copy" />
\ No newline at end of file
+			 a:id="@id/cpp_button_copy"
+			 a:src="@drawable/kb_copy"
+			 style="@style/cpp_simple_metro_control_image_button_style"
+			 a:contentDescription="Copy"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_division.xml b/android-app-core/res/layout/cpp_simple_button_division.xml
index ad36211b..bb48911f 100644
--- a/android-app-core/res/layout/cpp_simple_button_division.xml
+++ b/android-app-core/res/layout/cpp_simple_button_division.xml
@@ -1,12 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_division"
-	a:text="/"
-	style="@style/cpp_simple_metro_blue_operation_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_division"
+		a:text="/"
+		style="@style/cpp_simple_metro_blue_operation_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_dot.xml b/android-app-core/res/layout/cpp_simple_button_dot.xml
index 5e53ab00..e933cd52 100644
--- a/android-app-core/res/layout/cpp_simple_button_dot.xml
+++ b/android-app-core/res/layout/cpp_simple_button_dot.xml
@@ -1,12 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_period"
-	a:text="."
-	style="@style/metro_digit_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_period"
+		a:text="."
+		style="@style/metro_digit_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_equals.xml b/android-app-core/res/layout/cpp_simple_button_equals.xml
index bcf0396f..fd84179c 100644
--- a/android-app-core/res/layout/cpp_simple_button_equals.xml
+++ b/android-app-core/res/layout/cpp_simple_button_equals.xml
@@ -1,11 +1,27 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_equals"
-	a:text="="
-	style="@style/cpp_simple_metro_control_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_equals"
+		a:text="="
+		style="@style/cpp_simple_metro_control_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_erase.xml b/android-app-core/res/layout/cpp_simple_button_erase.xml
index b31d5ce1..9cccce0b 100644
--- a/android-app-core/res/layout/cpp_simple_button_erase.xml
+++ b/android-app-core/res/layout/cpp_simple_button_erase.xml
@@ -1,13 +1,29 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <ImageButton xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_erase"
-	a:src="@drawable/kb_erase"
-	style="@style/cpp_simple_metro_control_image_button_style"
-	a:contentDescription="Erase" />
\ No newline at end of file
+			 a:id="@id/cpp_button_erase"
+			 a:src="@drawable/kb_erase"
+			 style="@style/cpp_simple_metro_control_image_button_style"
+			 a:contentDescription="Erase"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_functions.xml b/android-app-core/res/layout/cpp_simple_button_functions.xml
index a18de38c..bc9ed462 100644
--- a/android-app-core/res/layout/cpp_simple_button_functions.xml
+++ b/android-app-core/res/layout/cpp_simple_button_functions.xml
@@ -1,13 +1,29 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_functions"
-	a:text="ƒ(x)"
-	a:textStyle="italic"
-	style="@style/cpp_simple_metro_control_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_functions"
+		a:text="ƒ(x)"
+		a:textStyle="italic"
+		style="@style/cpp_simple_metro_control_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_history.xml b/android-app-core/res/layout/cpp_simple_button_history.xml
index e16e00b7..ab407d13 100644
--- a/android-app-core/res/layout/cpp_simple_button_history.xml
+++ b/android-app-core/res/layout/cpp_simple_button_history.xml
@@ -1,12 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_history"
-	a:text="@string/c_history_button"
-	style="@style/cpp_simple_metro_control_button_style"
-	a:textStyle="bold" />
\ No newline at end of file
+		a:id="@id/cpp_button_history"
+		a:text="@string/c_history_button"
+		style="@style/cpp_simple_metro_control_button_style"
+		a:textStyle="bold"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_left.xml b/android-app-core/res/layout/cpp_simple_button_left.xml
index d0648c62..f043845f 100644
--- a/android-app-core/res/layout/cpp_simple_button_left.xml
+++ b/android-app-core/res/layout/cpp_simple_button_left.xml
@@ -1,12 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_left"
-	a:text="◀"
-	style="@style/cpp_simple_metro_control_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_left"
+		a:text="◀"
+		style="@style/cpp_simple_metro_control_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_like.xml b/android-app-core/res/layout/cpp_simple_button_like.xml
index bc55854f..235bad53 100644
--- a/android-app-core/res/layout/cpp_simple_button_like.xml
+++ b/android-app-core/res/layout/cpp_simple_button_like.xml
@@ -1,13 +1,29 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <ImageButton xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_like"
-	a:src="@drawable/kb_facebook"
-	style="@style/cpp_simple_metro_control_image_button_style"
-	a:contentDescription="Like" />
\ No newline at end of file
+			 a:id="@id/cpp_button_like"
+			 a:src="@drawable/kb_facebook"
+			 style="@style/cpp_simple_metro_control_image_button_style"
+			 a:contentDescription="Like"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_multiplication.xml b/android-app-core/res/layout/cpp_simple_button_multiplication.xml
index 809fd2b1..57fb7e39 100644
--- a/android-app-core/res/layout/cpp_simple_button_multiplication.xml
+++ b/android-app-core/res/layout/cpp_simple_button_multiplication.xml
@@ -1,12 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_multiplication"
-	a:text="×"
-	style="@style/cpp_simple_metro_blue_operation_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_multiplication"
+		a:text="×"
+		style="@style/cpp_simple_metro_blue_operation_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_paste.xml b/android-app-core/res/layout/cpp_simple_button_paste.xml
index 8fac963f..84ce21fa 100644
--- a/android-app-core/res/layout/cpp_simple_button_paste.xml
+++ b/android-app-core/res/layout/cpp_simple_button_paste.xml
@@ -1,13 +1,29 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <ImageButton xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_paste"
-	a:src="@drawable/kb_paste"
-	style="@style/cpp_simple_metro_control_image_button_style"
-	a:contentDescription="Paste" />
\ No newline at end of file
+			 a:id="@id/cpp_button_paste"
+			 a:src="@drawable/kb_paste"
+			 style="@style/cpp_simple_metro_control_image_button_style"
+			 a:contentDescription="Paste"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_percent.xml b/android-app-core/res/layout/cpp_simple_button_percent.xml
index c6938813..0c7e99cd 100644
--- a/android-app-core/res/layout/cpp_simple_button_percent.xml
+++ b/android-app-core/res/layout/cpp_simple_button_percent.xml
@@ -1,12 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_percent"
-	a:text="%"
-	style="@style/cpp_simple_metro_blue_operation_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_percent"
+		a:text="%"
+		style="@style/cpp_simple_metro_blue_operation_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_plus.xml b/android-app-core/res/layout/cpp_simple_button_plus.xml
index cb9c3b20..e66a20ce 100644
--- a/android-app-core/res/layout/cpp_simple_button_plus.xml
+++ b/android-app-core/res/layout/cpp_simple_button_plus.xml
@@ -1,11 +1,27 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_plus"
-	a:text="+"
-	style="@style/cpp_simple_metro_blue_operation_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_plus"
+		a:text="+"
+		style="@style/cpp_simple_metro_blue_operation_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_power.xml b/android-app-core/res/layout/cpp_simple_button_power.xml
index 6d0ba7af..257a2dee 100644
--- a/android-app-core/res/layout/cpp_simple_button_power.xml
+++ b/android-app-core/res/layout/cpp_simple_button_power.xml
@@ -1,12 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_power"
-	a:text="^"
-	style="@style/cpp_simple_metro_blue_operation_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_power"
+		a:text="^"
+		style="@style/cpp_simple_metro_blue_operation_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_right.xml b/android-app-core/res/layout/cpp_simple_button_right.xml
index afdaff28..174adcae 100644
--- a/android-app-core/res/layout/cpp_simple_button_right.xml
+++ b/android-app-core/res/layout/cpp_simple_button_right.xml
@@ -1,12 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_right"
-	a:text="▶"
-	style="@style/cpp_simple_metro_control_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_right"
+		a:text="▶"
+		style="@style/cpp_simple_metro_control_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_round_brackets.xml b/android-app-core/res/layout/cpp_simple_button_round_brackets.xml
index ed2222b8..395369c0 100644
--- a/android-app-core/res/layout/cpp_simple_button_round_brackets.xml
+++ b/android-app-core/res/layout/cpp_simple_button_round_brackets.xml
@@ -1,12 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_round_brackets"
-	a:text="(  )"
-	style="@style/cpp_simple_metro_digit_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_round_brackets"
+		a:text="(  )"
+		style="@style/cpp_simple_metro_digit_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_settings.xml b/android-app-core/res/layout/cpp_simple_button_settings.xml
index 14ca0b27..748647fc 100644
--- a/android-app-core/res/layout/cpp_simple_button_settings.xml
+++ b/android-app-core/res/layout/cpp_simple_button_settings.xml
@@ -1,13 +1,29 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <ImageButton xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_settings"
-	a:src="@drawable/kb_settings"
-	style="@style/cpp_simple_metro_control_image_button_style"
-	a:contentDescription="Settings" />
\ No newline at end of file
+			 a:id="@id/cpp_button_settings"
+			 a:src="@drawable/kb_settings"
+			 style="@style/cpp_simple_metro_control_image_button_style"
+			 a:contentDescription="Settings"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_subtraction.xml b/android-app-core/res/layout/cpp_simple_button_subtraction.xml
index c15221c3..7f7fa9b5 100644
--- a/android-app-core/res/layout/cpp_simple_button_subtraction.xml
+++ b/android-app-core/res/layout/cpp_simple_button_subtraction.xml
@@ -1,11 +1,27 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_subtraction"
-	a:text="-"
-	style="@style/cpp_simple_metro_blue_operation_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_subtraction"
+		a:text="-"
+		style="@style/cpp_simple_metro_blue_operation_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_button_vars.xml b/android-app-core/res/layout/cpp_simple_button_vars.xml
index e76af1a7..314db7fe 100644
--- a/android-app-core/res/layout/cpp_simple_button_vars.xml
+++ b/android-app-core/res/layout/cpp_simple_button_vars.xml
@@ -1,13 +1,29 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <Button xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_vars"
-	a:text="π,…"
-	a:textStyle="italic"
-	style="@style/cpp_simple_metro_control_button_style" />
\ No newline at end of file
+		a:id="@id/cpp_button_vars"
+		a:text="π,…"
+		a:textStyle="italic"
+		style="@style/cpp_simple_metro_control_button_style"/>
\ No newline at end of file
diff --git a/android-app-core/res/layout/cpp_simple_keyboard.xml b/android-app-core/res/layout/cpp_simple_keyboard.xml
index 97c60876..f8d83c21 100644
--- a/android-app-core/res/layout/cpp_simple_keyboard.xml
+++ b/android-app-core/res/layout/cpp_simple_keyboard.xml
@@ -1,103 +1,125 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:orientation="vertical">
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent"
+			  a:orientation="vertical">
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_simple_button_7" />
+		<include layout="@layout/cpp_simple_button_7"/>
 
-		<include layout="@layout/cpp_simple_button_8" />
+		<include layout="@layout/cpp_simple_button_8"/>
 
-		<include layout="@layout/cpp_simple_button_9" />
+		<include layout="@layout/cpp_simple_button_9"/>
 
-		<include layout="@layout/cpp_simple_button_multiplication" />
+		<include layout="@layout/cpp_simple_button_multiplication"/>
 
-		<include layout="@layout/cpp_simple_button_percent" />
+		<include layout="@layout/cpp_simple_button_percent"/>
 
-		<include layout="@layout/cpp_simple_button_clear" />
+		<include layout="@layout/cpp_simple_button_clear"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_simple_button_4" />
+		<include layout="@layout/cpp_simple_button_4"/>
 
-		<include layout="@layout/cpp_simple_button_5" />
+		<include layout="@layout/cpp_simple_button_5"/>
 
-		<include layout="@layout/cpp_simple_button_6" />
+		<include layout="@layout/cpp_simple_button_6"/>
 
-		<include layout="@layout/cpp_simple_button_division" />
+		<include layout="@layout/cpp_simple_button_division"/>
 
-		<include layout="@layout/cpp_simple_button_power" />
+		<include layout="@layout/cpp_simple_button_power"/>
 
-		<include layout="@layout/cpp_simple_button_erase" />
+		<include layout="@layout/cpp_simple_button_erase"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_simple_button_1" />
+		<include layout="@layout/cpp_simple_button_1"/>
 
-		<include layout="@layout/cpp_simple_button_2" />
+		<include layout="@layout/cpp_simple_button_2"/>
 
-		<include layout="@layout/cpp_simple_button_3" />
+		<include layout="@layout/cpp_simple_button_3"/>
 
-		<include layout="@layout/cpp_simple_button_plus" />
+		<include layout="@layout/cpp_simple_button_plus"/>
 
-		<include layout="@layout/cpp_simple_button_like" />
+		<include layout="@layout/cpp_simple_button_like"/>
 
-		<include layout="@layout/cpp_simple_button_copy" />
+		<include layout="@layout/cpp_simple_button_copy"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_simple_button_round_brackets" />
+		<include layout="@layout/cpp_simple_button_round_brackets"/>
 
-		<include layout="@layout/cpp_simple_button_0" />
+		<include layout="@layout/cpp_simple_button_0"/>
 
-		<include layout="@layout/cpp_simple_button_dot" />
+		<include layout="@layout/cpp_simple_button_dot"/>
 
-		<include layout="@layout/cpp_simple_button_subtraction" />
+		<include layout="@layout/cpp_simple_button_subtraction"/>
 
-		<include layout="@layout/cpp_simple_button_settings" />
+		<include layout="@layout/cpp_simple_button_settings"/>
 
-		<include layout="@layout/cpp_simple_button_paste" />
+		<include layout="@layout/cpp_simple_button_paste"/>
 
 	</LinearLayout>
 
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_simple_button_left" />
+		<include layout="@layout/cpp_simple_button_left"/>
 
-		<include layout="@layout/cpp_simple_button_right" />
+		<include layout="@layout/cpp_simple_button_right"/>
 
-		<include layout="@layout/cpp_simple_button_vars" />
+		<include layout="@layout/cpp_simple_button_vars"/>
 
-		<include layout="@layout/cpp_simple_button_functions" />
+		<include layout="@layout/cpp_simple_button_functions"/>
 
-		<include layout="@layout/cpp_simple_button_app" />
+		<include layout="@layout/cpp_simple_button_app"/>
 
-		<include layout="@layout/cpp_simple_button_history" />
+		<include layout="@layout/cpp_simple_button_history"/>
 
 	</LinearLayout>
 
diff --git a/android-app-core/res/layout/cpp_unit_converter.xml b/android-app-core/res/layout/cpp_unit_converter.xml
index 8bdc86ee..5733b43d 100644
--- a/android-app-core/res/layout/cpp_unit_converter.xml
+++ b/android-app-core/res/layout/cpp_unit_converter.xml
@@ -1,87 +1,109 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="fill_parent"
-	a:layout_height="fill_parent"
-	a:paddingLeft="10dp"
-	a:paddingRight="10dp"
-	a:orientation="vertical">
+			  a:layout_width="fill_parent"
+			  a:layout_height="fill_parent"
+			  a:paddingLeft="10dp"
+			  a:paddingRight="10dp"
+			  a:orientation="vertical">
 
 	<LinearLayout
-		a:layout_width="fill_parent"
-		a:layout_height="fill_parent"
-		a:paddingBottom="10dp"
-		a:orientation="horizontal">
+			a:layout_width="fill_parent"
+			a:layout_height="fill_parent"
+			a:paddingBottom="10dp"
+			a:orientation="horizontal">
 
 		<Spinner
-			a:id="@+id/unit_types_from"
-			a:layout_width="wrap_content"
-			a:layout_height="fill_parent" />
+				a:id="@+id/unit_types_from"
+				a:layout_width="wrap_content"
+				a:layout_height="fill_parent"/>
 
 
 		<EditText
-			a:id="@+id/units_from"
-			a:inputType="text"
-			a:singleLine="true"
-			a:layout_width="fill_parent"
-			a:layout_height="fill_parent" />
+				a:id="@+id/units_from"
+				a:inputType="text"
+				a:singleLine="true"
+				a:layout_width="fill_parent"
+				a:layout_height="fill_parent"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_width="fill_parent"
-		a:paddingBottom="10dp"
-		a:layout_height="fill_parent"
-		a:orientation="horizontal">
+			a:layout_width="fill_parent"
+			a:paddingBottom="10dp"
+			a:layout_height="fill_parent"
+			a:orientation="horizontal">
 
 		<Spinner
-			a:id="@+id/unit_types_to"
-			a:layout_width="wrap_content"
-			a:layout_height="fill_parent" />
+				a:id="@+id/unit_types_to"
+				a:layout_width="wrap_content"
+				a:layout_height="fill_parent"/>
 
 		<EditText
-			a:id="@+id/units_to"
-			a:editable="false"
-			a:inputType="none"
-			a:singleLine="true"
-			a:layout_width="fill_parent"
-			a:layout_height="fill_parent" />
+				a:id="@+id/units_to"
+				a:editable="false"
+				a:inputType="none"
+				a:singleLine="true"
+				a:layout_width="fill_parent"
+				a:layout_height="fill_parent"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_width="fill_parent"
-		a:paddingBottom="10dp"
-		a:layout_height="fill_parent"
-		a:gravity="center"
-		a:orientation="horizontal">
+			a:layout_width="fill_parent"
+			a:paddingBottom="10dp"
+			a:layout_height="fill_parent"
+			a:gravity="center"
+			a:orientation="horizontal">
 
 		<Button
-			a:id="@+id/unit_converter_ok_button"
-			a:text="@android:string/ok"
-			a:paddingLeft="15dp"
-			a:paddingRight="15dp"
-			a:singleLine="true"
-			a:layout_width="wrap_content"
-			a:layout_height="wrap_content" />
+				a:id="@+id/unit_converter_ok_button"
+				a:text="@android:string/ok"
+				a:paddingLeft="15dp"
+				a:paddingRight="15dp"
+				a:singleLine="true"
+				a:layout_width="wrap_content"
+				a:layout_height="wrap_content"/>
 
 		<Button
-			a:id="@+id/unit_converter_copy_button"
-			a:text="@android:string/copy"
-			a:paddingLeft="15dp"
-			a:paddingRight="15dp"
-			a:singleLine="true"
-			a:layout_width="wrap_content"
-			a:layout_height="wrap_content" />
+				a:id="@+id/unit_converter_copy_button"
+				a:text="@android:string/copy"
+				a:paddingLeft="15dp"
+				a:paddingRight="15dp"
+				a:singleLine="true"
+				a:layout_width="wrap_content"
+				a:layout_height="wrap_content"/>
 
 		<Button
-			a:id="@+id/unit_converter_custom_button"
-			a:paddingLeft="15dp"
-			a:paddingRight="15dp"
-			a:ellipsize="end"
-			a:singleLine="true"
-			a:layout_width="wrap_content"
-			a:layout_height="wrap_content" />
+				a:id="@+id/unit_converter_custom_button"
+				a:paddingLeft="15dp"
+				a:paddingRight="15dp"
+				a:ellipsize="end"
+				a:singleLine="true"
+				a:layout_width="wrap_content"
+				a:layout_height="wrap_content"/>
 
 	</LinearLayout>
 
diff --git a/android-app-core/res/layout/main_calculator.xml b/android-app-core/res/layout/main_calculator.xml
index 212851f9..6f0c7c34 100644
--- a/android-app-core/res/layout/main_calculator.xml
+++ b/android-app-core/res/layout/main_calculator.xml
@@ -1,8 +1,30 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-	android:orientation="vertical"
-	android:layout_width="fill_parent"
-	android:layout_height="fill_parent">
+			  android:orientation="vertical"
+			  android:layout_width="fill_parent"
+			  android:layout_height="fill_parent">
 	<!--should be implemented-->
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app-core/res/layout/main_calculator_mobile.xml b/android-app-core/res/layout/main_calculator_mobile.xml
index 212851f9..6f0c7c34 100644
--- a/android-app-core/res/layout/main_calculator_mobile.xml
+++ b/android-app-core/res/layout/main_calculator_mobile.xml
@@ -1,8 +1,30 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-	android:orientation="vertical"
-	android:layout_width="fill_parent"
-	android:layout_height="fill_parent">
+			  android:orientation="vertical"
+			  android:layout_width="fill_parent"
+			  android:layout_height="fill_parent">
 	<!--should be implemented-->
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app-core/res/values-es/text_about.xml b/android-app-core/res/values-es/text_about.xml
index 2e65c351..08a9f96d 100644
--- a/android-app-core/res/values-es/text_about.xml
+++ b/android-app-core/res/values-es/text_about.xml
@@ -1,14 +1,31 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
 
 	<string name="c_about">Acerca de</string>
 
-	<string name="c_about_content" formatted="false">Copyright (c) 2009-2011\n\n<b>Creado por serso aka se.solovyev</b>
+	<string name="c_about_content" formatted="false">Copyright (c) 2009-2011\n\n
+		<b>Creado por serso aka se.solovyev</b>
 		\n\n
 		Este programa es Open Source:\nTodo el código fuente puede encontrarse en\n
 		<a href="https://github.com/serso/android-calculatorpp">http://github.com</a>\n\n
diff --git a/android-app-core/res/values-es/text_functions.xml b/android-app-core/res/values-es/text_functions.xml
index e905ba7a..bc2112b4 100644
--- a/android-app-core/res/values-es/text_functions.xml
+++ b/android-app-core/res/values-es/text_functions.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-es/text_help.xml b/android-app-core/res/values-es/text_help.xml
index 776284c6..1ac3eb35 100644
--- a/android-app-core/res/values-es/text_help.xml
+++ b/android-app-core/res/values-es/text_help.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-es/text_operators.xml b/android-app-core/res/values-es/text_operators.xml
index adbf9630..1e861f83 100644
--- a/android-app-core/res/values-es/text_operators.xml
+++ b/android-app-core/res/values-es/text_operators.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-es/text_strings.xml b/android-app-core/res/values-es/text_strings.xml
index 537a88f0..952d6e37 100644
--- a/android-app-core/res/values-es/text_strings.xml
+++ b/android-app-core/res/values-es/text_strings.xml
@@ -1,9 +1,25 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-es/text_vars.xml b/android-app-core/res/values-es/text_vars.xml
index dcc9fd21..1200a1a9 100644
--- a/android-app-core/res/values-es/text_vars.xml
+++ b/android-app-core/res/values-es/text_vars.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-it/text_about.xml b/android-app-core/res/values-it/text_about.xml
index d3999b8a..75b2259c 100644
--- a/android-app-core/res/values-it/text_about.xml
+++ b/android-app-core/res/values-it/text_about.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-it/text_functions.xml b/android-app-core/res/values-it/text_functions.xml
index 7f59d9d8..d4f523e1 100644
--- a/android-app-core/res/values-it/text_functions.xml
+++ b/android-app-core/res/values-it/text_functions.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-it/text_help.xml b/android-app-core/res/values-it/text_help.xml
index f4d3f29f..bf24ce9b 100644
--- a/android-app-core/res/values-it/text_help.xml
+++ b/android-app-core/res/values-it/text_help.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-it/text_operators.xml b/android-app-core/res/values-it/text_operators.xml
index e5f5c8de..18c74204 100644
--- a/android-app-core/res/values-it/text_operators.xml
+++ b/android-app-core/res/values-it/text_operators.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-it/text_strings.xml b/android-app-core/res/values-it/text_strings.xml
index ab84e898..31159e9c 100644
--- a/android-app-core/res/values-it/text_strings.xml
+++ b/android-app-core/res/values-it/text_strings.xml
@@ -1,9 +1,25 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-it/text_vars.xml b/android-app-core/res/values-it/text_vars.xml
index a28135b6..6bc5f197 100644
--- a/android-app-core/res/values-it/text_vars.xml
+++ b/android-app-core/res/values-it/text_vars.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-ru/text_about.xml b/android-app-core/res/values-ru/text_about.xml
index 98bee277..bf97e72c 100644
--- a/android-app-core/res/values-ru/text_about.xml
+++ b/android-app-core/res/values-ru/text_about.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-ru/text_functions.xml b/android-app-core/res/values-ru/text_functions.xml
index 8a2d5f55..4ae91114 100644
--- a/android-app-core/res/values-ru/text_functions.xml
+++ b/android-app-core/res/values-ru/text_functions.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-ru/text_help.xml b/android-app-core/res/values-ru/text_help.xml
index 98b9165a..8395c324 100644
--- a/android-app-core/res/values-ru/text_help.xml
+++ b/android-app-core/res/values-ru/text_help.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-ru/text_operators.xml b/android-app-core/res/values-ru/text_operators.xml
index b251a4e4..cf7fb303 100644
--- a/android-app-core/res/values-ru/text_operators.xml
+++ b/android-app-core/res/values-ru/text_operators.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-ru/text_preferences.xml b/android-app-core/res/values-ru/text_preferences.xml
index c86a4986..3558142b 100644
--- a/android-app-core/res/values-ru/text_preferences.xml
+++ b/android-app-core/res/values-ru/text_preferences.xml
@@ -1,3 +1,25 @@
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<string name="c_auto_orientation_title">Переключатель автоматического поворота экрана</string>
 	<string name="c_auto_orientation_summary">Если включено, то калькулятор будет автоматически менять ориентацию
diff --git a/android-app-core/res/values-ru/text_strings.xml b/android-app-core/res/values-ru/text_strings.xml
index 7f2b1e3e..4c84dfb5 100644
--- a/android-app-core/res/values-ru/text_strings.xml
+++ b/android-app-core/res/values-ru/text_strings.xml
@@ -1,9 +1,25 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-ru/text_vars.xml b/android-app-core/res/values-ru/text_vars.xml
index 31219fc1..d4ca27ff 100644
--- a/android-app-core/res/values-ru/text_vars.xml
+++ b/android-app-core/res/values-ru/text_vars.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-uk/text_about.xml b/android-app-core/res/values-uk/text_about.xml
index 4739f53a..57ee9570 100644
--- a/android-app-core/res/values-uk/text_about.xml
+++ b/android-app-core/res/values-uk/text_about.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-uk/text_functions.xml b/android-app-core/res/values-uk/text_functions.xml
index 75aa867b..5165bf24 100644
--- a/android-app-core/res/values-uk/text_functions.xml
+++ b/android-app-core/res/values-uk/text_functions.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-uk/text_help.xml b/android-app-core/res/values-uk/text_help.xml
index 51b02729..1a7eb379 100644
--- a/android-app-core/res/values-uk/text_help.xml
+++ b/android-app-core/res/values-uk/text_help.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-uk/text_operators.xml b/android-app-core/res/values-uk/text_operators.xml
index 6972035d..8f94ebb4 100644
--- a/android-app-core/res/values-uk/text_operators.xml
+++ b/android-app-core/res/values-uk/text_operators.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-uk/text_preferences.xml b/android-app-core/res/values-uk/text_preferences.xml
index f6f2a905..4e58e57c 100644
--- a/android-app-core/res/values-uk/text_preferences.xml
+++ b/android-app-core/res/values-uk/text_preferences.xml
@@ -1,3 +1,25 @@
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<string name="c_auto_orientation_title">Перемикач автоматичного повороту екрану</string>
 	<string name="c_auto_orientation_summary">Якщо включено, то калькулятор будет автоматично міняти орієнтацію екрану
diff --git a/android-app-core/res/values-uk/text_strings.xml b/android-app-core/res/values-uk/text_strings.xml
index ca9da921..7d0325c9 100644
--- a/android-app-core/res/values-uk/text_strings.xml
+++ b/android-app-core/res/values-uk/text_strings.xml
@@ -1,9 +1,25 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-uk/text_vars.xml b/android-app-core/res/values-uk/text_vars.xml
index 11793cf5..c8df59e5 100644
--- a/android-app-core/res/values-uk/text_vars.xml
+++ b/android-app-core/res/values-uk/text_vars.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-zh-rtw/text_about.xml b/android-app-core/res/values-zh-rtw/text_about.xml
index 3a2e4a4e..6d995bb5 100644
--- a/android-app-core/res/values-zh-rtw/text_about.xml
+++ b/android-app-core/res/values-zh-rtw/text_about.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-zh-rtw/text_functions.xml b/android-app-core/res/values-zh-rtw/text_functions.xml
index 44a3a8cc..484c35e7 100644
--- a/android-app-core/res/values-zh-rtw/text_functions.xml
+++ b/android-app-core/res/values-zh-rtw/text_functions.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-zh-rtw/text_help.xml b/android-app-core/res/values-zh-rtw/text_help.xml
index 21423df9..2099b0d6 100644
--- a/android-app-core/res/values-zh-rtw/text_help.xml
+++ b/android-app-core/res/values-zh-rtw/text_help.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-zh-rtw/text_operators.xml b/android-app-core/res/values-zh-rtw/text_operators.xml
index 270fb9f5..660cb402 100644
--- a/android-app-core/res/values-zh-rtw/text_operators.xml
+++ b/android-app-core/res/values-zh-rtw/text_operators.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-zh-rtw/text_preferences.xml b/android-app-core/res/values-zh-rtw/text_preferences.xml
index ce9e0bcb..9465d273 100644
--- a/android-app-core/res/values-zh-rtw/text_preferences.xml
+++ b/android-app-core/res/values-zh-rtw/text_preferences.xml
@@ -1,3 +1,25 @@
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<string name="c_auto_orientation_title">自動切換螢幕方向</string>
 	<string name="c_auto_orientation_summary">是否自動切換螢幕顯示的方向</string>
diff --git a/android-app-core/res/values-zh-rtw/text_strings.xml b/android-app-core/res/values-zh-rtw/text_strings.xml
index 9bfb51f8..eb1956cc 100644
--- a/android-app-core/res/values-zh-rtw/text_strings.xml
+++ b/android-app-core/res/values-zh-rtw/text_strings.xml
@@ -1,9 +1,25 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values-zh-rtw/text_vars.xml b/android-app-core/res/values-zh-rtw/text_vars.xml
index 18de2b5e..11d09bc7 100644
--- a/android-app-core/res/values-zh-rtw/text_vars.xml
+++ b/android-app-core/res/values-zh-rtw/text_vars.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values/arrays.xml b/android-app-core/res/values/arrays.xml
index f2fe1ba6..6fc1d59c 100644
--- a/android-app-core/res/values/arrays.xml
+++ b/android-app-core/res/values/arrays.xml
@@ -1,4 +1,26 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<!--
 	 monochrome,
diff --git a/android-app-core/res/values/attributes.xml b/android-app-core/res/values/attributes.xml
index 016a410f..5bf830a5 100644
--- a/android-app-core/res/values/attributes.xml
+++ b/android-app-core/res/values/attributes.xml
@@ -1,19 +1,41 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 
-	<attr name="cpp_dialog_style" format="reference" />
-	<attr name="cpp_digit_button_style" format="reference" />
-	<attr name="cpp_control_button_style" format="reference" />
-	<attr name="cpp_control_image_button_style" format="reference" />
-	<attr name="cpp_operation_button_style" format="reference" />
-	<attr name="cpp_fragment_layout_style" format="reference" />
-	<attr name="cpp_fragment_title_style" format="reference" />
-	<attr name="cpp_fragment_list_view_style" format="reference" />
-	<attr name="cpp_fragment_list_view_item_style" format="reference" />
-	<attr name="cpp_button_style" format="reference" />
-	<attr name="cpp_pane_style" format="reference" />
-	<attr name="cpp_pane_style_transparent" format="reference" />
-	<attr name="cpp_main_layout_style" format="reference" />
-	<attr name="cpp_main_multi_pane_layout_style" format="reference" />
+	<attr name="cpp_dialog_style" format="reference"/>
+	<attr name="cpp_digit_button_style" format="reference"/>
+	<attr name="cpp_control_button_style" format="reference"/>
+	<attr name="cpp_control_image_button_style" format="reference"/>
+	<attr name="cpp_operation_button_style" format="reference"/>
+	<attr name="cpp_fragment_layout_style" format="reference"/>
+	<attr name="cpp_fragment_title_style" format="reference"/>
+	<attr name="cpp_fragment_list_view_style" format="reference"/>
+	<attr name="cpp_fragment_list_view_item_style" format="reference"/>
+	<attr name="cpp_button_style" format="reference"/>
+	<attr name="cpp_pane_style" format="reference"/>
+	<attr name="cpp_pane_style_transparent" format="reference"/>
+	<attr name="cpp_main_layout_style" format="reference"/>
+	<attr name="cpp_main_multi_pane_layout_style" format="reference"/>
 
 </resources>
diff --git a/android-app-core/res/values/colors.xml b/android-app-core/res/values/colors.xml
index 8c584dfb..e7fed57d 100644
--- a/android-app-core/res/values/colors.xml
+++ b/android-app-core/res/values/colors.xml
@@ -1,4 +1,26 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<color name="cpp_list_divider">#ff2e2e2e</color>
 	<color name="cpp_default_text_color">#ffffffff</color>
diff --git a/android-app-core/res/values/dimens.xml b/android-app-core/res/values/dimens.xml
index 42ef792d..96f59461 100644
--- a/android-app-core/res/values/dimens.xml
+++ b/android-app-core/res/values/dimens.xml
@@ -1,3 +1,25 @@
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<dimen name="cpp_text_size">20sp</dimen>
 	<dimen name="cpp_button_margin">0.5dp</dimen>
diff --git a/android-app-core/res/values/ids.xml b/android-app-core/res/values/ids.xml
index a6cfdbd7..f8c84de6 100644
--- a/android-app-core/res/values/ids.xml
+++ b/android-app-core/res/values/ids.xml
@@ -1,37 +1,59 @@
 <?xml version="1.0" encoding="utf-8"?>
-<resources>
-	<item type="id" name="cpp_button_1" />
-	<item type="id" name="cpp_button_2" />
-	<item type="id" name="cpp_button_3" />
-	<item type="id" name="cpp_button_4" />
-	<item type="id" name="cpp_button_5" />
-	<item type="id" name="cpp_button_6" />
-	<item type="id" name="cpp_button_7" />
-	<item type="id" name="cpp_button_8" />
-	<item type="id" name="cpp_button_9" />
-	<item type="id" name="cpp_button_0" />
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
 
-	<item type="id" name="cpp_button_period" />
-	<item type="id" name="cpp_button_round_brackets" />
-	<item type="id" name="cpp_button_settings" />
-	<item type="id" name="cpp_button_like" />
-	<item type="id" name="cpp_button_left" />
-	<item type="id" name="cpp_button_right" />
-	<item type="id" name="cpp_button_vars" />
-	<item type="id" name="cpp_button_functions" />
-	<item type="id" name="cpp_button_operators" />
-	<item type="id" name="cpp_button_app" />
-	<item type="id" name="cpp_button_history" />
-	<item type="id" name="cpp_button_multiplication" />
-	<item type="id" name="cpp_button_division" />
-	<item type="id" name="cpp_button_plus" />
-	<item type="id" name="cpp_button_subtraction" />
-	<item type="id" name="cpp_button_percent" />
-	<item type="id" name="cpp_button_power" />
-	<item type="id" name="cpp_button_clear" />
-	<item type="id" name="cpp_button_erase" />
-	<item type="id" name="cpp_button_copy" />
-	<item type="id" name="cpp_button_paste" />
-	<item type="id" name="cpp_button_equals" />
+<resources>
+	<item type="id" name="cpp_button_1"/>
+	<item type="id" name="cpp_button_2"/>
+	<item type="id" name="cpp_button_3"/>
+	<item type="id" name="cpp_button_4"/>
+	<item type="id" name="cpp_button_5"/>
+	<item type="id" name="cpp_button_6"/>
+	<item type="id" name="cpp_button_7"/>
+	<item type="id" name="cpp_button_8"/>
+	<item type="id" name="cpp_button_9"/>
+	<item type="id" name="cpp_button_0"/>
+
+	<item type="id" name="cpp_button_period"/>
+	<item type="id" name="cpp_button_round_brackets"/>
+	<item type="id" name="cpp_button_settings"/>
+	<item type="id" name="cpp_button_like"/>
+	<item type="id" name="cpp_button_left"/>
+	<item type="id" name="cpp_button_right"/>
+	<item type="id" name="cpp_button_vars"/>
+	<item type="id" name="cpp_button_functions"/>
+	<item type="id" name="cpp_button_operators"/>
+	<item type="id" name="cpp_button_app"/>
+	<item type="id" name="cpp_button_history"/>
+	<item type="id" name="cpp_button_multiplication"/>
+	<item type="id" name="cpp_button_division"/>
+	<item type="id" name="cpp_button_plus"/>
+	<item type="id" name="cpp_button_subtraction"/>
+	<item type="id" name="cpp_button_percent"/>
+	<item type="id" name="cpp_button_power"/>
+	<item type="id" name="cpp_button_clear"/>
+	<item type="id" name="cpp_button_erase"/>
+	<item type="id" name="cpp_button_copy"/>
+	<item type="id" name="cpp_button_paste"/>
+	<item type="id" name="cpp_button_equals"/>
 
 </resources>
\ No newline at end of file
diff --git a/android-app-core/res/values/preferences.xml b/android-app-core/res/values/preferences.xml
index 8e3be996..fbfec9ae 100644
--- a/android-app-core/res/values/preferences.xml
+++ b/android-app-core/res/values/preferences.xml
@@ -1,4 +1,26 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<string name="p_calc_functions">org.solovyev.android.calculator.CalculatorModel_functions</string>
 	<string name="p_calc_vars">org.solovyev.android.calculator.CalculatorModel_vars</string>
diff --git a/android-app-core/res/values/styles.xml b/android-app-core/res/values/styles.xml
index f2b125d8..cc5ab903 100644
--- a/android-app-core/res/values/styles.xml
+++ b/android-app-core/res/values/styles.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values/text_about.xml b/android-app-core/res/values/text_about.xml
index 52705a92..efa09c6c 100644
--- a/android-app-core/res/values/text_about.xml
+++ b/android-app-core/res/values/text_about.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values/text_functions.xml b/android-app-core/res/values/text_functions.xml
index f863c54b..0f36328a 100644
--- a/android-app-core/res/values/text_functions.xml
+++ b/android-app-core/res/values/text_functions.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values/text_help.xml b/android-app-core/res/values/text_help.xml
index e14b5631..dfb65304 100644
--- a/android-app-core/res/values/text_help.xml
+++ b/android-app-core/res/values/text_help.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values/text_operators.xml b/android-app-core/res/values/text_operators.xml
index 2938c6dd..a3c6d968 100644
--- a/android-app-core/res/values/text_operators.xml
+++ b/android-app-core/res/values/text_operators.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values/text_preferences.xml b/android-app-core/res/values/text_preferences.xml
index 1f6fb1e7..ce5c34da 100644
--- a/android-app-core/res/values/text_preferences.xml
+++ b/android-app-core/res/values/text_preferences.xml
@@ -1,3 +1,25 @@
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<string name="c_auto_orientation_title">Toggle screen orientation change</string>
 	<string name="c_auto_orientation_summary">If turned on calculator will change screen orientation automatically
@@ -22,5 +44,6 @@
 	</string>
 
 	<string name="prefs_prevent_screen_from_fading_title">Prevent screen from fading</string>
-	<string name="prefs_prevent_screen_from_fading_summary">If turned on screen will not fade while using the app</string>
+	<string name="prefs_prevent_screen_from_fading_summary">If turned on screen will not fade while using the app
+	</string>
 </resources>
\ No newline at end of file
diff --git a/android-app-core/res/values/text_strings.xml b/android-app-core/res/values/text_strings.xml
index 7e0655aa..8e2be8f6 100644
--- a/android-app-core/res/values/text_strings.xml
+++ b/android-app-core/res/values/text_strings.xml
@@ -1,9 +1,25 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values/text_vars.xml b/android-app-core/res/values/text_vars.xml
index 5dd84d6b..fb3c8278 100644
--- a/android-app-core/res/values/text_vars.xml
+++ b/android-app-core/res/values/text_vars.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values/text_wizard.xml b/android-app-core/res/values/text_wizard.xml
index 2debb5dd..e2f3e486 100644
--- a/android-app-core/res/values/text_wizard.xml
+++ b/android-app-core/res/values/text_wizard.xml
@@ -1,20 +1,40 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
 	<string name="cpp_wizard_layout_optimized">Optimized</string>
 	<string name="cpp_wizard_layout_big_buttons">Big buttons</string>
 	<string name="cpp_wizard_mode_simple">Simple</string>
-	<string name="cpp_wizard_mode_simple_description">In simple mode only basic functionality will be available from the main screen.
-		Result is rounded up to 5 digits.</string>
+	<string name="cpp_wizard_mode_simple_description">In simple mode only basic functionality will be available from the
+		main screen.
+		Result is rounded up to 5 digits.
+	</string>
 	<string name="cpp_wizard_mode_engineer">Engineer</string>
-	<string name="cpp_wizard_mode_engineer_description">In engineer mode special functions will be used on the main screen.
-		Result is is not rounded and is presented in engineer notation.</string>
+	<string name="cpp_wizard_mode_engineer_description">In engineer mode special functions will be used on the main
+		screen.
+		Result is is not rounded and is presented in engineer notation.
+	</string>
 	<string name="cpp_restart_wizard">Start wizard</string>
 
 	<string name="cpp_wizard_dragbutton_action_end">Excellent! Tap button one more time to try again</string>
diff --git a/android-app-core/res/values/theme_gray.xml b/android-app-core/res/values/theme_gray.xml
index 55bdb2ee..a203bf86 100644
--- a/android-app-core/res/values/theme_gray.xml
+++ b/android-app-core/res/values/theme_gray.xml
@@ -1,7 +1,23 @@
 <?xml version="1.0" encoding="utf-8"?><!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values/theme_light_blue.xml b/android-app-core/res/values/theme_light_blue.xml
index 118fb58c..60f3dedb 100644
--- a/android-app-core/res/values/theme_light_blue.xml
+++ b/android-app-core/res/values/theme_light_blue.xml
@@ -1,7 +1,23 @@
 <?xml version="1.0" encoding="utf-8"?><!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/res/values/theme_metro_blue.xml b/android-app-core/res/values/theme_metro_blue.xml
index bf471644..2e446477 100644
--- a/android-app-core/res/values/theme_metro_blue.xml
+++ b/android-app-core/res/values/theme_metro_blue.xml
@@ -1,3 +1,25 @@
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 
 	<style name="metro_digit_button_style" parent="cpp_keyboard_button_style">
diff --git a/android-app-core/res/values/theme_metro_green.xml b/android-app-core/res/values/theme_metro_green.xml
index 9d6b519d..86479cbb 100644
--- a/android-app-core/res/values/theme_metro_green.xml
+++ b/android-app-core/res/values/theme_metro_green.xml
@@ -1,3 +1,25 @@
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 
 	<style name="metro_green_operation_button_style" parent="metro_digit_button_style">
diff --git a/android-app-core/res/values/theme_metro_purple.xml b/android-app-core/res/values/theme_metro_purple.xml
index 623855f8..a84d13b1 100644
--- a/android-app-core/res/values/theme_metro_purple.xml
+++ b/android-app-core/res/values/theme_metro_purple.xml
@@ -1,3 +1,25 @@
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 
 	<style name="metro_purple_operation_button_style" parent="metro_digit_button_style">
diff --git a/android-app-core/res/values/theme_violet.xml b/android-app-core/res/values/theme_violet.xml
index ad150e36..dd0b9308 100644
--- a/android-app-core/res/values/theme_violet.xml
+++ b/android-app-core/res/values/theme_violet.xml
@@ -1,7 +1,23 @@
 <?xml version="1.0" encoding="utf-8"?><!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app-core/src/main/java/org/solovyev/android/AndroidUtils2.java b/android-app-core/src/main/java/org/solovyev/android/AndroidUtils2.java
index acfba5db..6180603f 100644
--- a/android-app-core/src/main/java/org/solovyev/android/AndroidUtils2.java
+++ b/android-app-core/src/main/java/org/solovyev/android/AndroidUtils2.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android;
 
 /**
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/AndroidCalculatorDisplayView.java b/android-app-core/src/main/java/org/solovyev/android/calculator/AndroidCalculatorDisplayView.java
index 7bedef5c..ed98f16e 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/AndroidCalculatorDisplayView.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/AndroidCalculatorDisplayView.java
@@ -1,6 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
@@ -14,6 +31,7 @@ import android.support.v4.app.FragmentActivity;
 import android.text.Html;
 import android.util.AttributeSet;
 import android.util.TypedValue;
+
 import org.solovyev.android.calculator.core.R;
 import org.solovyev.android.calculator.text.TextProcessor;
 import org.solovyev.android.calculator.view.TextHighlighter;
@@ -21,6 +39,7 @@ import org.solovyev.android.view.AutoResizeTextView;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/AndroidCalculatorEditorView.java b/android-app-core/src/main/java/org/solovyev/android/calculator/AndroidCalculatorEditorView.java
index 41e69c25..d529bd42 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/AndroidCalculatorEditorView.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/AndroidCalculatorEditorView.java
@@ -1,6 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
@@ -18,6 +35,7 @@ import android.util.AttributeSet;
 import android.util.Log;
 import android.view.ContextMenu;
 import android.widget.EditText;
+
 import org.solovyev.android.calculator.text.TextProcessor;
 import org.solovyev.android.calculator.view.TextHighlighter;
 import org.solovyev.android.prefs.BooleanPreference;
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorButton.java b/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorButton.java
index ef5ce63c..6915718d 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorButton.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorButton.java
@@ -1,8 +1,32 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.content.Context;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.core.R;
 
 import java.util.HashMap;
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorButtons.java b/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorButtons.java
index 93fa13ba..aa3aeec1 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorButtons.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorButtons.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.app.Activity;
@@ -13,6 +35,7 @@ import android.widget.Button;
 import android.widget.RemoteViews;
 import jscl.AngleUnit;
 import jscl.NumeralBase;
+
 import org.solovyev.android.Views;
 import org.solovyev.android.calculator.core.R;
 import org.solovyev.android.calculator.model.AndroidCalculatorEngine;
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayMenuItem.java b/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayMenuItem.java
index 4b7ad8ea..095483c8 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayMenuItem.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayMenuItem.java
@@ -1,8 +1,32 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.content.Context;
 import jscl.math.Generic;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.core.R;
 import org.solovyev.android.calculator.jscl.JsclOperation;
 import org.solovyev.android.calculator.plot.CalculatorPlotter;
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayOnClickListener.java b/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayOnClickListener.java
index 5721140b..4b3994b2 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayOnClickListener.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayOnClickListener.java
@@ -1,8 +1,32 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.support.v4.app.FragmentActivity;
 import android.view.View;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.menu.ContextMenuBuilder;
 import org.solovyev.android.menu.ListContextMenu;
 
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorPreferences.java b/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorPreferences.java
index cb13f9fc..ae040c24 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorPreferences.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorPreferences.java
@@ -1,8 +1,31 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.content.SharedPreferences;
 import jscl.AngleUnit;
 import jscl.NumeralBase;
+
 import org.solovyev.android.calculator.core.R;
 import org.solovyev.android.calculator.math.MathType;
 import org.solovyev.android.calculator.model.AndroidCalculatorEngine;
@@ -10,6 +33,7 @@ import org.solovyev.android.prefs.*;
 import org.solovyev.android.view.VibratorContainer;
 
 import javax.annotation.Nonnull;
+
 import java.text.DecimalFormatSymbols;
 import java.util.Locale;
 
@@ -116,8 +140,7 @@ public final class CalculatorPreferences {
 			main_cellphone(R.layout.main_calculator, 0, true),
 
 			simple(R.layout.main_calculator, R.string.p_layout_simple, true),
-			simple_mobile(R.layout.main_calculator_mobile, R.string.p_layout_simple_mobile, false)
-			;
+			simple_mobile(R.layout.main_calculator_mobile, R.string.p_layout_simple_mobile, false);
 
 			private final int layoutId;
 			private final int nameResId;
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/ConversionMenuItem.java b/android-app-core/src/main/java/org/solovyev/android/calculator/ConversionMenuItem.java
index 8a034247..ed44264c 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/ConversionMenuItem.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/ConversionMenuItem.java
@@ -1,9 +1,33 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.content.Context;
 import jscl.NumeralBase;
 import jscl.math.Generic;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.jscl.JsclOperation;
 import org.solovyev.android.menu.AMenuItem;
 
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/DigitButtonDragProcessor.java b/android-app-core/src/main/java/org/solovyev/android/calculator/DigitButtonDragProcessor.java
index 003f60ed..ef99e295 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/DigitButtonDragProcessor.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/DigitButtonDragProcessor.java
@@ -1,12 +1,31 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
 
 import android.view.MotionEvent;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.view.drag.DirectionDragButton;
 import org.solovyev.android.view.drag.DragButton;
 import org.solovyev.android.view.drag.DragDirection;
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/FixableMessage.java b/android-app-core/src/main/java/org/solovyev/android/calculator/FixableMessage.java
index d701208c..6fc02ab2 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/FixableMessage.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/FixableMessage.java
@@ -1,9 +1,33 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.os.Parcel;
 import android.os.Parcelable;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.common.msg.Message;
 import org.solovyev.common.msg.MessageType;
 
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/FixableMessagesDialog.java b/android-app-core/src/main/java/org/solovyev/android/calculator/FixableMessagesDialog.java
index 63f36d1a..e08453ed 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/FixableMessagesDialog.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/FixableMessagesDialog.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.content.Context;
@@ -13,8 +35,11 @@ import android.view.ViewGroup;
 import android.widget.Button;
 import android.widget.CheckBox;
 import android.widget.TextView;
+
 import com.actionbarsherlock.app.SherlockActivity;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.core.R;
 import org.solovyev.common.msg.Message;
 import org.solovyev.common.text.Strings;
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/ParcelableCalculatorDisplayViewState.java b/android-app-core/src/main/java/org/solovyev/android/calculator/ParcelableCalculatorDisplayViewState.java
index 2357000d..e8f6f305 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/ParcelableCalculatorDisplayViewState.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/ParcelableCalculatorDisplayViewState.java
@@ -1,10 +1,34 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.os.Parcel;
 import android.os.Parcelable;
 import jscl.math.Generic;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.jscl.JsclOperation;
 
 /**
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/ParcelableCalculatorEditorViewState.java b/android-app-core/src/main/java/org/solovyev/android/calculator/ParcelableCalculatorEditorViewState.java
index defa7555..7141835e 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/ParcelableCalculatorEditorViewState.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/ParcelableCalculatorEditorViewState.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.os.Parcel;
 import android.os.Parcelable;
+
 import javax.annotation.Nonnull;
 
 /**
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/ParcelableDialogData.java b/android-app-core/src/main/java/org/solovyev/android/calculator/ParcelableDialogData.java
index 87ce397e..1205883a 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/ParcelableDialogData.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/ParcelableDialogData.java
@@ -1,9 +1,33 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.os.Parcel;
 import android.os.Parcelable;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.common.msg.MessageLevel;
 import org.solovyev.common.msg.MessageType;
 
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/external/AndroidExternalListenersContainer.java b/android-app-core/src/main/java/org/solovyev/android/calculator/external/AndroidExternalListenersContainer.java
index adabf4c9..3bf6f552 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/external/AndroidExternalListenersContainer.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/external/AndroidExternalListenersContainer.java
@@ -1,13 +1,37 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.external;
 
 import android.content.Context;
 import android.content.Intent;
 import android.os.Parcelable;
+
 import org.solovyev.android.App;
 import org.solovyev.android.calculator.*;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import java.util.HashSet;
 import java.util.Set;
 
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/external/DefaultExternalCalculatorIntentHandler.java b/android-app-core/src/main/java/org/solovyev/android/calculator/external/DefaultExternalCalculatorIntentHandler.java
index 28ede99d..9423a97d 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/external/DefaultExternalCalculatorIntentHandler.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/external/DefaultExternalCalculatorIntentHandler.java
@@ -1,9 +1,33 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.external;
 
 import android.content.Context;
 import android.content.Intent;
 import android.os.Parcelable;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.CalculatorDisplayViewState;
 import org.solovyev.android.calculator.CalculatorEditorViewState;
 import org.solovyev.android.calculator.Locator;
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/external/ExternalCalculatorIntentHandler.java b/android-app-core/src/main/java/org/solovyev/android/calculator/external/ExternalCalculatorIntentHandler.java
index e8e752c5..4540558f 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/external/ExternalCalculatorIntentHandler.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/external/ExternalCalculatorIntentHandler.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.external;
 
 import android.content.Context;
 import android.content.Intent;
+
 import javax.annotation.Nonnull;
 
 /**
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/external/ExternalCalculatorStateUpdater.java b/android-app-core/src/main/java/org/solovyev/android/calculator/external/ExternalCalculatorStateUpdater.java
index b827754e..8cb56a59 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/external/ExternalCalculatorStateUpdater.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/external/ExternalCalculatorStateUpdater.java
@@ -1,7 +1,31 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.external;
 
 import android.content.Context;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.CalculatorDisplayViewState;
 import org.solovyev.android.calculator.CalculatorEditorViewState;
 
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/model/AndroidCalculatorEngine.java b/android-app-core/src/main/java/org/solovyev/android/calculator/model/AndroidCalculatorEngine.java
index 5067d563..7863c5a5 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/model/AndroidCalculatorEngine.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/model/AndroidCalculatorEngine.java
@@ -1,6 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.model;
@@ -16,7 +33,9 @@ import jscl.NumeralBase;
 import jscl.math.function.Function;
 import jscl.math.function.IConstant;
 import jscl.math.operator.Operator;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.*;
 import org.solovyev.android.calculator.core.R;
 import org.solovyev.android.prefs.BooleanPreference;
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/model/AndroidMathEntityDao.java b/android-app-core/src/main/java/org/solovyev/android/calculator/model/AndroidMathEntityDao.java
index 5a49e4cb..8379f076 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/model/AndroidMathEntityDao.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/model/AndroidMathEntityDao.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.model;
 
 import android.app.Application;
@@ -5,8 +27,10 @@ import android.content.Context;
 import android.content.SharedPreferences;
 import android.content.res.Resources;
 import android.preference.PreferenceManager;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.simpleframework.xml.Serializer;
 import org.simpleframework.xml.core.Persister;
 import org.solovyev.android.App;
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/plot/AndroidCalculatorPlotter.java b/android-app-core/src/main/java/org/solovyev/android/calculator/plot/AndroidCalculatorPlotter.java
index 041172c3..8e70f246 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/plot/AndroidCalculatorPlotter.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/plot/AndroidCalculatorPlotter.java
@@ -1,11 +1,35 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.preference.PreferenceManager;
 import jscl.math.Generic;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.CalculatorPreferences;
 
 import java.util.List;
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/plot/AndroidPlotLineStyle.java b/android-app-core/src/main/java/org/solovyev/android/calculator/plot/AndroidPlotLineStyle.java
index 0685d190..067553f8 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/plot/AndroidPlotLineStyle.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/plot/AndroidPlotLineStyle.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import android.graphics.DashPathEffect;
 import android.graphics.Paint;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/view/AngleUnitsButton.java b/android-app-core/src/main/java/org/solovyev/android/calculator/view/AngleUnitsButton.java
index 8c82eed1..776c94b3 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/view/AngleUnitsButton.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/view/AngleUnitsButton.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.view;
@@ -11,7 +27,9 @@ import android.content.res.Resources;
 import android.graphics.Paint;
 import android.text.TextPaint;
 import android.util.AttributeSet;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.Locator;
 import org.solovyev.android.calculator.core.R;
 import org.solovyev.android.view.drag.DirectionDragButton;
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/view/NumeralBaseConverterDialog.java b/android-app-core/src/main/java/org/solovyev/android/calculator/view/NumeralBaseConverterDialog.java
index 73fd0067..81c88097 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/view/NumeralBaseConverterDialog.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/view/NumeralBaseConverterDialog.java
@@ -1,11 +1,35 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.view;
 
 import android.app.AlertDialog;
 import android.content.Context;
 import android.view.View;
 import android.view.WindowManager;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.CalculatorParseException;
 import org.solovyev.android.calculator.Locator;
 import org.solovyev.android.calculator.ToJsclTextProcessor;
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/view/NumeralBasesButton.java b/android-app-core/src/main/java/org/solovyev/android/calculator/view/NumeralBasesButton.java
index 753ea367..af4ab8e2 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/view/NumeralBasesButton.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/view/NumeralBasesButton.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.view;
@@ -11,7 +27,9 @@ import android.content.res.Resources;
 import android.graphics.Paint;
 import android.text.TextPaint;
 import android.util.AttributeSet;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.Locator;
 import org.solovyev.android.calculator.core.R;
 import org.solovyev.android.view.drag.DirectionDragButton;
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/view/TextHighlighter.java b/android-app-core/src/main/java/org/solovyev/android/calculator/view/TextHighlighter.java
index baa8877e..7cf98f0a 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/view/TextHighlighter.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/view/TextHighlighter.java
@@ -1,13 +1,30 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.view;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.*;
 import org.solovyev.android.calculator.math.MathType;
 import org.solovyev.android.calculator.text.TextProcessor;
diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/view/UnitConverterViewBuilder.java b/android-app-core/src/main/java/org/solovyev/android/calculator/view/UnitConverterViewBuilder.java
index a55dc126..b33b8aa0 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/view/UnitConverterViewBuilder.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/view/UnitConverterViewBuilder.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.view;
 
 import android.app.Activity;
@@ -8,8 +30,10 @@ import android.text.TextWatcher;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.*;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.core.R;
 import org.solovyev.android.view.ViewBuilder;
 import org.solovyev.android.view.ViewFromLayoutBuilder;
diff --git a/android-app-onscreen/AndroidManifest.xml b/android-app-onscreen/AndroidManifest.xml
index 8b799d51..3e72674d 100644
--- a/android-app-onscreen/AndroidManifest.xml
+++ b/android-app-onscreen/AndroidManifest.xml
@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-	package="org.solovyev.android.calculator.onscreen"
-	android:versionCode="1"
-	android:versionName="1.0">
+		  package="org.solovyev.android.calculator.onscreen"
+		  android:versionCode="1"
+		  android:versionName="1.0">
 
 	<uses-sdk
-		android:minSdkVersion="4"
-		android:targetSdkVersion="17" />
+			android:minSdkVersion="4"
+			android:targetSdkVersion="17"/>
 
 </manifest>
\ No newline at end of file
diff --git a/android-app-onscreen/pom.xml b/android-app-onscreen/pom.xml
index cb9488d1..2bd50a90 100644
--- a/android-app-onscreen/pom.xml
+++ b/android-app-onscreen/pom.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<parent>
diff --git a/android-app-onscreen/res/layout/onscreen_display.xml b/android-app-onscreen/res/layout/onscreen_display.xml
index 6475cd0d..72d8c2ee 100644
--- a/android-app-onscreen/res/layout/onscreen_display.xml
+++ b/android-app-onscreen/res/layout/onscreen_display.xml
@@ -7,10 +7,10 @@
   -->
 
 <org.solovyev.android.calculator.AndroidCalculatorDisplayView xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/calculator_display"
-	style="@style/cpp_onscreen_display_style"
-	a:padding="@dimen/cpp_display_padding"
-	a:inputType="textMultiLine"
-	a:maxLines="3"
-	a:scrollHorizontally="false"
-	a:scrollbars="none" />
\ No newline at end of file
+															  a:id="@+id/calculator_display"
+															  style="@style/cpp_onscreen_display_style"
+															  a:padding="@dimen/cpp_display_padding"
+															  a:inputType="textMultiLine"
+															  a:maxLines="3"
+															  a:scrollHorizontally="false"
+															  a:scrollbars="none"/>
\ No newline at end of file
diff --git a/android-app-onscreen/res/layout/onscreen_editor.xml b/android-app-onscreen/res/layout/onscreen_editor.xml
index 5d8aa164..14893fa1 100644
--- a/android-app-onscreen/res/layout/onscreen_editor.xml
+++ b/android-app-onscreen/res/layout/onscreen_editor.xml
@@ -7,16 +7,16 @@
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_fragment_layout"
-	style="?cpp_fragment_layout_style"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:padding="@dimen/cpp_editor_padding">
+			  a:id="@+id/main_fragment_layout"
+			  style="?cpp_fragment_layout_style"
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent"
+			  a:padding="@dimen/cpp_editor_padding">
 
 	<org.solovyev.android.calculator.AndroidCalculatorEditorView
-		a:id="@+id/calculator_editor"
-		style="@style/cpp_onscreen_editor_style"
-		a:textIsSelectable="true"
-		a:hint="@string/c_calc_editor_hint" />
+			a:id="@+id/calculator_editor"
+			style="@style/cpp_onscreen_editor_style"
+			a:textIsSelectable="true"
+			a:hint="@string/c_calc_editor_hint"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app-onscreen/res/layout/onscreen_footer.xml b/android-app-onscreen/res/layout/onscreen_footer.xml
index 577ef1a0..408d9eb4 100644
--- a/android-app-onscreen/res/layout/onscreen_footer.xml
+++ b/android-app-onscreen/res/layout/onscreen_footer.xml
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-	android:orientation="horizontal"
-	android:layout_width="match_parent"
-	android:layout_height="wrap_content">
+			  android:orientation="horizontal"
+			  android:layout_width="match_parent"
+			  android:layout_height="wrap_content">
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app-onscreen/res/layout/onscreen_header.xml b/android-app-onscreen/res/layout/onscreen_header.xml
index d00f2f93..fe575532 100644
--- a/android-app-onscreen/res/layout/onscreen_header.xml
+++ b/android-app-onscreen/res/layout/onscreen_header.xml
@@ -1,41 +1,41 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <RelativeLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="30dp">
+				a:layout_width="match_parent"
+				a:layout_height="30dp">
 
 	<LinearLayout
-		a:id="@+id/onscreen_header_buttons"
-		a:layout_width="wrap_content"
-		a:layout_height="match_parent"
-		a:layout_alignParentRight="true">
+			a:id="@+id/onscreen_header_buttons"
+			a:layout_width="wrap_content"
+			a:layout_height="match_parent"
+			a:layout_alignParentRight="true">
 
 		<ImageButton
-			a:id="@+id/onscreen_fold_button"
-			style="@style/onscreen_header_button_style"
-			a:src="@drawable/cpp_onscreen_button_fold" />
+				a:id="@+id/onscreen_fold_button"
+				style="@style/onscreen_header_button_style"
+				a:src="@drawable/cpp_onscreen_button_fold"/>
 
 		<ImageButton
-			a:id="@+id/onscreen_minimize_button"
-			style="@style/onscreen_header_button_style"
-			a:src="@drawable/cpp_onscreen_button_minimize" />
+				a:id="@+id/onscreen_minimize_button"
+				style="@style/onscreen_header_button_style"
+				a:src="@drawable/cpp_onscreen_button_minimize"/>
 
 		<ImageButton
-			a:id="@+id/onscreen_close_button"
-			style="@style/onscreen_header_button_style"
-			a:src="@drawable/cpp_onscreen_button_close" />
+				a:id="@+id/onscreen_close_button"
+				style="@style/onscreen_header_button_style"
+				a:src="@drawable/cpp_onscreen_button_close"/>
 
 	</LinearLayout>
 
 	<ImageView
-		a:id="@+id/onscreen_title"
-		a:layout_width="match_parent"
-		a:layout_height="match_parent"
-		a:src="@drawable/cpp_onscreen_header_logo"
-		a:scaleType="fitStart"
-		a:paddingLeft="6dp"
-		a:paddingTop="2dp"
-		a:paddingBottom="2dp"
-		a:layout_toLeftOf="@id/onscreen_header_buttons" />
+			a:id="@+id/onscreen_title"
+			a:layout_width="match_parent"
+			a:layout_height="match_parent"
+			a:src="@drawable/cpp_onscreen_header_logo"
+			a:scaleType="fitStart"
+			a:paddingLeft="6dp"
+			a:paddingTop="2dp"
+			a:paddingBottom="2dp"
+			a:layout_toLeftOf="@id/onscreen_header_buttons"/>
 
 </RelativeLayout>
\ No newline at end of file
diff --git a/android-app-onscreen/res/layout/onscreen_keyboard.xml b/android-app-onscreen/res/layout/onscreen_keyboard.xml
index 2a6588ca..44c43dd4 100644
--- a/android-app-onscreen/res/layout/onscreen_keyboard.xml
+++ b/android-app-onscreen/res/layout/onscreen_keyboard.xml
@@ -1,74 +1,74 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:orientation="vertical">
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent"
+			  a:orientation="vertical">
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_simple_button_7" />
+		<include layout="@layout/cpp_simple_button_7"/>
 
-		<include layout="@layout/cpp_simple_button_8" />
+		<include layout="@layout/cpp_simple_button_8"/>
 
-		<include layout="@layout/cpp_simple_button_9" />
+		<include layout="@layout/cpp_simple_button_9"/>
 
-		<include layout="@layout/cpp_simple_button_multiplication" />
+		<include layout="@layout/cpp_simple_button_multiplication"/>
 
-		<include layout="@layout/cpp_simple_button_erase" />
+		<include layout="@layout/cpp_simple_button_erase"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_simple_button_4" />
+		<include layout="@layout/cpp_simple_button_4"/>
 
-		<include layout="@layout/cpp_simple_button_5" />
+		<include layout="@layout/cpp_simple_button_5"/>
 
-		<include layout="@layout/cpp_simple_button_6" />
+		<include layout="@layout/cpp_simple_button_6"/>
 
-		<include layout="@layout/cpp_simple_button_division" />
+		<include layout="@layout/cpp_simple_button_division"/>
 
-		<include layout="@layout/cpp_simple_button_percent" />
+		<include layout="@layout/cpp_simple_button_percent"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_simple_button_1" />
+		<include layout="@layout/cpp_simple_button_1"/>
 
-		<include layout="@layout/cpp_simple_button_2" />
+		<include layout="@layout/cpp_simple_button_2"/>
 
-		<include layout="@layout/cpp_simple_button_3" />
+		<include layout="@layout/cpp_simple_button_3"/>
 
-		<include layout="@layout/cpp_simple_button_plus" />
+		<include layout="@layout/cpp_simple_button_plus"/>
 
-		<include layout="@layout/cpp_simple_button_power" />
+		<include layout="@layout/cpp_simple_button_power"/>
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_simple_button_round_brackets" />
+		<include layout="@layout/cpp_simple_button_round_brackets"/>
 
-		<include layout="@layout/cpp_simple_button_0" />
+		<include layout="@layout/cpp_simple_button_0"/>
 
-		<include layout="@layout/cpp_simple_button_dot" />
+		<include layout="@layout/cpp_simple_button_dot"/>
 
-		<include layout="@layout/cpp_simple_button_subtraction" />
+		<include layout="@layout/cpp_simple_button_subtraction"/>
 
-		<include layout="@layout/cpp_simple_button_app" />
+		<include layout="@layout/cpp_simple_button_app"/>
 
 	</LinearLayout>
 
diff --git a/android-app-onscreen/res/layout/onscreen_layout.xml b/android-app-onscreen/res/layout/onscreen_layout.xml
index 6307a708..d13c744a 100644
--- a/android-app-onscreen/res/layout/onscreen_layout.xml
+++ b/android-app-onscreen/res/layout/onscreen_layout.xml
@@ -1,51 +1,51 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:orientation="vertical"
-	style="@style/cpp_onscreen_main_layout_style">
+			  a:orientation="vertical"
+			  style="@style/cpp_onscreen_main_layout_style">
 
 	<include
-		a:id="@+id/onscreen_header"
-		layout="@layout/onscreen_header" />
+			a:id="@+id/onscreen_header"
+			layout="@layout/onscreen_header"/>
 
 	<LinearLayout
-		a:id="@+id/onscreen_content"
-		a:orientation="vertical"
-		a:layout_width="match_parent"
-		a:layout_height="match_parent">
+			a:id="@+id/onscreen_content"
+			a:orientation="vertical"
+			a:layout_width="match_parent"
+			a:layout_height="match_parent">
 
 		<include
-			layout="@layout/onscreen_editor"
-			a:layout_width="match_parent"
-			a:layout_height="wrap_content" />
+				layout="@layout/onscreen_editor"
+				a:layout_width="match_parent"
+				a:layout_height="wrap_content"/>
 
 		<LinearLayout
-			a:layout_weight="1"
-			a:layout_width="match_parent"
-			a:layout_height="0dp">
-
-			<include
-				layout="@layout/cpp_simple_button_equals"
-				a:layout_margin="@dimen/cpp_button_margin"
 				a:layout_weight="1"
-				a:layout_width="0dp"
-				a:layout_height="match_parent" />
+				a:layout_width="match_parent"
+				a:layout_height="0dp">
 
 			<include
-				layout="@layout/onscreen_display"
-				a:layout_weight="4"
-				a:layout_width="0dp"
-				a:layout_height="wrap_content" />
+					layout="@layout/cpp_simple_button_equals"
+					a:layout_margin="@dimen/cpp_button_margin"
+					a:layout_weight="1"
+					a:layout_width="0dp"
+					a:layout_height="match_parent"/>
+
+			<include
+					layout="@layout/onscreen_display"
+					a:layout_weight="4"
+					a:layout_width="0dp"
+					a:layout_height="wrap_content"/>
 
 		</LinearLayout>
 
 		<include
-			layout="@layout/onscreen_keyboard"
-			a:layout_weight="4"
-			a:layout_width="match_parent"
-			a:layout_height="0dp" />
+				layout="@layout/onscreen_keyboard"
+				a:layout_weight="4"
+				a:layout_width="match_parent"
+				a:layout_height="0dp"/>
 	</LinearLayout>
 
-	<include layout="@layout/onscreen_footer" />
+	<include layout="@layout/onscreen_footer"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/CalculatorOnscreenBroadcastReceiver.java b/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/CalculatorOnscreenBroadcastReceiver.java
index 6f8c74bb..a8c035f5 100644
--- a/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/CalculatorOnscreenBroadcastReceiver.java
+++ b/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/CalculatorOnscreenBroadcastReceiver.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.onscreen;
 
 import android.content.BroadcastReceiver;
@@ -5,7 +27,9 @@ import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.preference.PreferenceManager;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.CalculatorPreferences;
 
 /**
diff --git a/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/CalculatorOnscreenService.java b/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/CalculatorOnscreenService.java
index 8ac2e5d6..29afaf39 100644
--- a/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/CalculatorOnscreenService.java
+++ b/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/CalculatorOnscreenService.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.onscreen;
 
 import android.app.NotificationManager;
@@ -9,8 +31,10 @@ import android.os.IBinder;
 import android.support.v4.app.NotificationCompat;
 import android.util.DisplayMetrics;
 import android.view.WindowManager;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.Views;
 import org.solovyev.android.calculator.CalculatorDisplayViewState;
 import org.solovyev.android.calculator.CalculatorEditorViewState;
diff --git a/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/CalculatorOnscreenStartActivity.java b/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/CalculatorOnscreenStartActivity.java
index ed93e069..d68360f7 100644
--- a/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/CalculatorOnscreenStartActivity.java
+++ b/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/CalculatorOnscreenStartActivity.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.onscreen;
 
 import android.app.Activity;
@@ -5,7 +27,9 @@ import android.content.Context;
 import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.Android;
 import org.solovyev.android.App;
 import org.solovyev.android.calculator.AbstractFixableError;
diff --git a/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/CalculatorOnscreenView.java b/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/CalculatorOnscreenView.java
index 8f6b629b..04893ec6 100644
--- a/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/CalculatorOnscreenView.java
+++ b/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/CalculatorOnscreenView.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.onscreen;
 
 import android.content.Context;
@@ -11,8 +33,10 @@ import android.view.MotionEvent;
 import android.view.View;
 import android.view.WindowManager;
 import android.widget.ImageView;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.*;
 import org.solovyev.android.prefs.Preference;
 
@@ -370,7 +394,7 @@ public class CalculatorOnscreenView {
 	private static class WindowDragTouchListener implements View.OnTouchListener {
 
     	/*
-    	**********************************************************************
+		**********************************************************************
     	*
     	*                           CONSTANTS
     	*
diff --git a/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/CalculatorOnscreenViewState.java b/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/CalculatorOnscreenViewState.java
index dac8482b..367ba7ac 100644
--- a/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/CalculatorOnscreenViewState.java
+++ b/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/CalculatorOnscreenViewState.java
@@ -1,11 +1,35 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.onscreen;
 
 import android.content.SharedPreferences;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.util.Log;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.json.JSONException;
 import org.json.JSONObject;
 import org.solovyev.android.prefs.AbstractPreference;
diff --git a/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/OnscreenViewListener.java b/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/OnscreenViewListener.java
index 00b5143d..c547e55d 100644
--- a/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/OnscreenViewListener.java
+++ b/android-app-onscreen/src/main/java/org/solovyev/android/calculator/onscreen/OnscreenViewListener.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.onscreen;
 
 /**
diff --git a/android-app-test/pom.xml b/android-app-test/pom.xml
index 5278f140..44c7a52d 100644
--- a/android-app-test/pom.xml
+++ b/android-app-test/pom.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 
 	<parent>
 		<groupId>org.solovyev.android</groupId>
diff --git a/android-app-widget/AndroidManifest.xml b/android-app-widget/AndroidManifest.xml
index 19a41354..dedbe451 100644
--- a/android-app-widget/AndroidManifest.xml
+++ b/android-app-widget/AndroidManifest.xml
@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-	package="org.solovyev.android.calculator.widget"
-	android:versionCode="1"
-	android:versionName="1.0">
+		  package="org.solovyev.android.calculator.widget"
+		  android:versionCode="1"
+		  android:versionName="1.0">
 
 	<uses-sdk
-		android:minSdkVersion="4"
-		android:targetSdkVersion="17" />
+			android:minSdkVersion="4"
+			android:targetSdkVersion="17"/>
 
 </manifest>
\ No newline at end of file
diff --git a/android-app-widget/pom.xml b/android-app-widget/pom.xml
index daf6f799..6ccc003b 100644
--- a/android-app-widget/pom.xml
+++ b/android-app-widget/pom.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<parent>
diff --git a/android-app-widget/res/layout/widget_display.xml b/android-app-widget/res/layout/widget_display.xml
index 8c4fbc7a..e64b7c11 100644
--- a/android-app-widget/res/layout/widget_display.xml
+++ b/android-app-widget/res/layout/widget_display.xml
@@ -7,9 +7,9 @@
   -->
 
 <TextView xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/calculator_display"
-	style="@style/cpp_widget_display_style"
-	a:textIsSelectable="true"
-	a:padding="@dimen/cpp_display_padding"
-	a:singleLine="false"
-	a:scrollbars="vertical" />
\ No newline at end of file
+		  a:id="@+id/calculator_display"
+		  style="@style/cpp_widget_display_style"
+		  a:textIsSelectable="true"
+		  a:padding="@dimen/cpp_display_padding"
+		  a:singleLine="false"
+		  a:scrollbars="vertical"/>
\ No newline at end of file
diff --git a/android-app-widget/res/layout/widget_editor.xml b/android-app-widget/res/layout/widget_editor.xml
index 9b0094c3..13e24d33 100644
--- a/android-app-widget/res/layout/widget_editor.xml
+++ b/android-app-widget/res/layout/widget_editor.xml
@@ -7,18 +7,18 @@
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_fragment_layout"
-	style="@style/cpp_default_fragment_layout_style"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:padding="@dimen/cpp_editor_padding">
+			  a:id="@+id/main_fragment_layout"
+			  style="@style/cpp_default_fragment_layout_style"
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent"
+			  a:padding="@dimen/cpp_editor_padding">
 
 	<TextView
-		a:id="@+id/calculator_editor"
-		style="@style/cpp_widget_editor_style"
-		a:textIsSelectable="true"
-		a:singleLine="false"
-		a:scrollbars="vertical"
-		a:hint="@string/c_calc_editor_hint" />
+			a:id="@+id/calculator_editor"
+			style="@style/cpp_widget_editor_style"
+			a:textIsSelectable="true"
+			a:singleLine="false"
+			a:scrollbars="vertical"
+			a:hint="@string/c_calc_editor_hint"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app-widget/res/layout/widget_layout.xml b/android-app-widget/res/layout/widget_layout.xml
index 0eb7b2a1..96c83c0a 100644
--- a/android-app-widget/res/layout/widget_layout.xml
+++ b/android-app-widget/res/layout/widget_layout.xml
@@ -1,41 +1,41 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:orientation="vertical"
-	style="@style/cpp_widget_main_layout_style">
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent"
+			  a:orientation="vertical"
+			  style="@style/cpp_widget_main_layout_style">
 
 	<include
-		layout="@layout/widget_editor"
-		a:layout_weight="2"
-		a:layout_width="match_parent"
-		a:layout_height="0dp" />
+			layout="@layout/widget_editor"
+			a:layout_weight="2"
+			a:layout_width="match_parent"
+			a:layout_height="0dp"/>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
-
-		<include
-			layout="@layout/cpp_simple_button_equals"
-			a:layout_margin="@dimen/cpp_button_margin"
 			a:layout_weight="1"
-			a:layout_width="0dp"
-			a:layout_height="match_parent" />
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
 		<include
-			layout="@layout/widget_display"
-			a:layout_weight="5"
-			a:layout_width="0dp"
-			a:layout_height="wrap_content" />
+				layout="@layout/cpp_simple_button_equals"
+				a:layout_margin="@dimen/cpp_button_margin"
+				a:layout_weight="1"
+				a:layout_width="0dp"
+				a:layout_height="match_parent"/>
+
+		<include
+				layout="@layout/widget_display"
+				a:layout_weight="5"
+				a:layout_width="0dp"
+				a:layout_height="wrap_content"/>
 
 	</LinearLayout>
 
 	<include
-		layout="@layout/cpp_simple_keyboard"
-		a:layout_weight="5"
-		a:layout_width="match_parent"
-		a:layout_height="0dp" />
+			layout="@layout/cpp_simple_keyboard"
+			a:layout_weight="5"
+			a:layout_width="match_parent"
+			a:layout_height="0dp"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/AbstractCalculatorWidgetProvider.java b/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/AbstractCalculatorWidgetProvider.java
index f39eb345..feabad84 100644
--- a/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/AbstractCalculatorWidgetProvider.java
+++ b/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/AbstractCalculatorWidgetProvider.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.widget;
 
 import android.app.PendingIntent;
@@ -8,6 +30,7 @@ import android.content.Context;
 import android.content.Intent;
 import android.text.Html;
 import android.widget.RemoteViews;
+
 import org.solovyev.android.calculator.*;
 import org.solovyev.android.calculator.external.CalculatorExternalListenersContainer;
 import org.solovyev.android.calculator.external.ExternalCalculatorIntentHandler;
diff --git a/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetConfigurationActivity.java b/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetConfigurationActivity.java
index 0cdefb95..a0564b39 100644
--- a/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetConfigurationActivity.java
+++ b/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetConfigurationActivity.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.widget;
 
 import android.app.Activity;
diff --git a/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetIntentHandler.java b/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetIntentHandler.java
index a1e195dc..2eb4e3ab 100644
--- a/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetIntentHandler.java
+++ b/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetIntentHandler.java
@@ -1,8 +1,32 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.widget;
 
 import android.content.Context;
 import android.content.Intent;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.CalculatorButton;
 import org.solovyev.android.calculator.Locator;
 import org.solovyev.android.calculator.external.DefaultExternalCalculatorIntentHandler;
diff --git a/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetProvider.java b/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetProvider.java
index 17a35815..d53a7cd4 100644
--- a/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetProvider.java
+++ b/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetProvider.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.widget;
 
 /**
diff --git a/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetProvider3x4.java b/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetProvider3x4.java
index 8f54e6a3..bcf2f83b 100644
--- a/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetProvider3x4.java
+++ b/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetProvider3x4.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.widget;
 
 /**
diff --git a/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetProvider4x4.java b/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetProvider4x4.java
index 176d68a8..e8ddbfe9 100644
--- a/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetProvider4x4.java
+++ b/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetProvider4x4.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.widget;
 
 /**
diff --git a/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetProvider4x5.java b/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetProvider4x5.java
index 300efb9c..5130d615 100644
--- a/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetProvider4x5.java
+++ b/android-app-widget/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidgetProvider4x5.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.widget;
 
 /**
diff --git a/android-app/AndroidManifest.xml b/android-app/AndroidManifest.xml
index 4b7350af..dddd1d44 100644
--- a/android-app/AndroidManifest.xml
+++ b/android-app/AndroidManifest.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:installLocation="auto" android:versionCode="117" android:versionName="1.6.3-SNAPSHOT" package="org.solovyev.android.calculator">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:installLocation="auto"
+		  android:versionCode="117" android:versionName="1.6.3-SNAPSHOT" package="org.solovyev.android.calculator">
 
 	<uses-permission android:name="android.permission.VIBRATE"/>
 	<uses-permission android:name="android.permission.INTERNET"/>
@@ -22,9 +23,12 @@
 
 	<uses-sdk android:minSdkVersion="4" android:targetSdkVersion="17"/>
 
-	<application android:allowBackup="true" android:debuggable="true" android:hardwareAccelerated="false" android:icon="@drawable/icon" android:label="@string/c_app_name" android:name=".CalculatorApplication" android:theme="@style/cpp_metro_blue_theme">
+	<application android:allowBackup="true" android:debuggable="true" android:hardwareAccelerated="false"
+				 android:icon="@drawable/icon" android:label="@string/c_app_name" android:name=".CalculatorApplication"
+				 android:theme="@style/cpp_metro_blue_theme">
 
-		<activity android:clearTaskOnLaunch="true" android:launchMode="singleTop" android:label="@string/c_app_name" android:name=".CalculatorActivity" android:windowSoftInputMode="adjustPan">
+		<activity android:clearTaskOnLaunch="true" android:launchMode="singleTop" android:label="@string/c_app_name"
+				  android:name=".CalculatorActivity" android:windowSoftInputMode="adjustPan">
 
 			<intent-filter>
 				<action android:name="android.intent.action.MAIN"/>
@@ -33,14 +37,18 @@
 
 		</activity>
 
-		<activity android:clearTaskOnLaunch="true" android:launchMode="singleTop" android:label="@string/c_app_name" android:name=".CalculatorActivityMobile" android:windowSoftInputMode="adjustPan"/>
+		<activity android:clearTaskOnLaunch="true" android:launchMode="singleTop" android:label="@string/c_app_name"
+				  android:name=".CalculatorActivityMobile" android:windowSoftInputMode="adjustPan"/>
 
 		<!-- settings must use action bar icon-->
-		<activity android:icon="@drawable/ab_icon" android:label="@string/c_app_settings" android:name=".preferences.CalculatorPreferencesActivity"/>
+		<activity android:icon="@drawable/ab_icon" android:label="@string/c_app_settings"
+				  android:name=".preferences.CalculatorPreferencesActivity"/>
 
 		<activity android:label="@string/c_history" android:name=".history.CalculatorHistoryActivity"/>
 
-		<activity android:excludeFromRecents="true" android:finishOnTaskLaunch="true" android:label="@string/calculation_messages_dialog_title" android:launchMode="singleTask" android:name=".FixableMessagesDialog" android:theme="@style/cpp_metro_blue_dialog_theme"/>
+		<activity android:excludeFromRecents="true" android:finishOnTaskLaunch="true"
+				  android:label="@string/calculation_messages_dialog_title" android:launchMode="singleTask"
+				  android:name=".FixableMessagesDialog" android:theme="@style/cpp_metro_blue_dialog_theme"/>
 
 		<activity android:label="@string/c_about" android:name=".about.CalculatorAboutActivity"/>
 
@@ -52,36 +60,47 @@
 
 		<activity android:label="@string/c_vars_and_constants" android:name=".math.edit.CalculatorVarsActivity"/>
 		<activity android:name=".CalculatorWikiActivity"/>
-		<activity android:name=".wizard.CalculatorWizardActivity" android:theme="@style/cpp_metro_blue_dialog_theme" android:launchMode="singleTop">
+		<activity android:name=".wizard.CalculatorWizardActivity" android:theme="@style/cpp_metro_blue_dialog_theme"
+				  android:launchMode="singleTop">
 			<intent-filter>
 				<action android:name="android.intent.action.MAIN"/>
 			</intent-filter>
 		</activity>
 
 		<activity android:label="@string/c_plot_graph" android:name=".plot.CalculatorPlotActivity"/>
-		<activity android:label="@string/cpp_plot_functions" android:name=".plot.CalculatorPlotFunctionsActivity" android:theme="@style/cpp_metro_blue_dialog_theme"/>
-		<activity android:label="@string/cpp_plot_function_settings" android:name=".plot.CalculatorPlotFunctionSettingsActivity" android:theme="@style/cpp_metro_blue_dialog_theme"/>
-		<activity android:label="@string/cpp_plot_range" android:name=".plot.CalculatorPlotRangeActivity" android:theme="@style/cpp_metro_blue_dialog_theme"/>
+		<activity android:label="@string/cpp_plot_functions" android:name=".plot.CalculatorPlotFunctionsActivity"
+				  android:theme="@style/cpp_metro_blue_dialog_theme"/>
+		<activity android:label="@string/cpp_plot_function_settings"
+				  android:name=".plot.CalculatorPlotFunctionSettingsActivity"
+				  android:theme="@style/cpp_metro_blue_dialog_theme"/>
+		<activity android:label="@string/cpp_plot_range" android:name=".plot.CalculatorPlotRangeActivity"
+				  android:theme="@style/cpp_metro_blue_dialog_theme"/>
 
-		<activity android:label="@string/cpp_purchase_title" android:name=".preferences.CalculatorPurchaseDialogActivity" android:theme="@style/cpp_metro_blue_dialog_theme"/>
+		<activity android:label="@string/cpp_purchase_title"
+				  android:name=".preferences.CalculatorPurchaseDialogActivity"
+				  android:theme="@style/cpp_metro_blue_dialog_theme"/>
 
 		<activity android:name=".CalculatorDialogActivity" android:theme="@style/cpp_metro_blue_dialog_theme"/>
 
 		<!-- todo serso: strings-->
 		<activity android:label="@string/c_plot_graph" android:name=".matrix.CalculatorMatrixActivity"/>
 
-		<activity android:name=".widget.CalculatorWidgetConfigurationActivity" android:theme="@style/cpp_metro_blue_theme">
+		<activity android:name=".widget.CalculatorWidgetConfigurationActivity"
+				  android:theme="@style/cpp_metro_blue_theme">
 			<intent-filter>
 				<action android:name="android.appwidget.action.APPWIDGET_CONFIGURE"/>
 			</intent-filter>
 		</activity>
 
 		<!-- settings must use action bar icon-->
-		<activity android:icon="@drawable/ab_icon" android:label="@string/c_settings" android:name=".plot.CalculatorPlotPreferenceActivity"/>
+		<activity android:icon="@drawable/ab_icon" android:label="@string/c_settings"
+				  android:name=".plot.CalculatorPlotPreferenceActivity"/>
 
 		<!-- ONSCREEN CONFIG -->
 
-		<activity android:icon="@drawable/icon_onscreen" android:label="@string/c_app_name_on_screen" android:launchMode="singleInstance" android:name=".onscreen.CalculatorOnscreenStartActivity" android:theme="@style/cpp_metro_blue_dialog_theme">
+		<activity android:icon="@drawable/icon_onscreen" android:label="@string/c_app_name_on_screen"
+				  android:launchMode="singleInstance" android:name=".onscreen.CalculatorOnscreenStartActivity"
+				  android:theme="@style/cpp_metro_blue_dialog_theme">
 
 			<intent-filter>
 				<action android:name="android.intent.action.MAIN"/>
@@ -109,7 +128,8 @@
 
 		<!-- WIDGET CONFIG -->
 
-		<receiver android:icon="@drawable/icon" android:label="@string/c_app_widget_3x3_name" android:name=".widget.CalculatorWidgetProvider">
+		<receiver android:icon="@drawable/icon" android:label="@string/c_app_widget_3x3_name"
+				  android:name=".widget.CalculatorWidgetProvider">
 
 			<intent-filter>
 				<action android:name="android.appwidget.action.APPWIDGET_UPDATE"/>
@@ -122,7 +142,8 @@
 			<meta-data android:name="android.appwidget.provider" android:resource="@xml/calculator_widget_info_3x3"/>
 		</receiver>
 
-		<receiver android:icon="@drawable/icon" android:label="@string/c_app_widget_3x4_name" android:name=".widget.CalculatorWidgetProvider3x4">
+		<receiver android:icon="@drawable/icon" android:label="@string/c_app_widget_3x4_name"
+				  android:name=".widget.CalculatorWidgetProvider3x4">
 
 			<intent-filter>
 				<action android:name="android.appwidget.action.APPWIDGET_UPDATE"/>
@@ -135,7 +156,8 @@
 			<meta-data android:name="android.appwidget.provider" android:resource="@xml/calculator_widget_info_3x4"/>
 		</receiver>
 
-		<receiver android:icon="@drawable/icon" android:label="@string/c_app_widget_4x4_name" android:name=".widget.CalculatorWidgetProvider4x4">
+		<receiver android:icon="@drawable/icon" android:label="@string/c_app_widget_4x4_name"
+				  android:name=".widget.CalculatorWidgetProvider4x4">
 
 			<intent-filter>
 				<action android:name="android.appwidget.action.APPWIDGET_UPDATE"/>
@@ -148,7 +170,8 @@
 			<meta-data android:name="android.appwidget.provider" android:resource="@xml/calculator_widget_info_4x4"/>
 		</receiver>
 
-		<receiver android:icon="@drawable/icon" android:label="@string/c_app_widget_4x5_name" android:name=".widget.CalculatorWidgetProvider4x5">
+		<receiver android:icon="@drawable/icon" android:label="@string/c_app_widget_4x5_name"
+				  android:name=".widget.CalculatorWidgetProvider4x5">
 
 			<intent-filter>
 				<action android:name="android.appwidget.action.APPWIDGET_UPDATE"/>
@@ -163,7 +186,9 @@
 
 		<!-- ADMOB + BILLING CONFIG -->
 
-		<activity android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize" android:name="com.google.ads.AdActivity"/>
+		<activity
+				android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize"
+				android:name="com.google.ads.AdActivity"/>
 
 		<service android:name="net.robotmedia.billing.BillingService"/>
 		<receiver android:name="net.robotmedia.billing.BillingReceiver">
@@ -176,7 +201,9 @@
 
 		<!-- ACRA CONFIG -->
 
-		<activity android:excludeFromRecents="true" android:finishOnTaskLaunch="true" android:launchMode="singleInstance" android:name="org.acra.CrashReportDialog" android:theme="@style/Theme.Sherlock.Dialog"/>
+		<activity android:excludeFromRecents="true" android:finishOnTaskLaunch="true"
+				  android:launchMode="singleInstance" android:name="org.acra.CrashReportDialog"
+				  android:theme="@style/Theme.Sherlock.Dialog"/>
 
 	</application>
 </manifest>
\ No newline at end of file
diff --git a/android-app/pom.xml b/android-app/pom.xml
index b8776ad5..f1ab2bfa 100644
--- a/android-app/pom.xml
+++ b/android-app/pom.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 
 	<parent>
 		<groupId>org.solovyev.android</groupId>
diff --git a/android-app/res/layout-land/cpp_app_keyboard.xml b/android-app/res/layout-land/cpp_app_keyboard.xml
index 0de4c393..0160cd2e 100644
--- a/android-app/res/layout-land/cpp_app_keyboard.xml
+++ b/android-app/res/layout-land/cpp_app_keyboard.xml
@@ -1,76 +1,98 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:orientation="vertical">
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent"
+			  a:orientation="vertical">
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_vars" />
+		<include layout="@layout/cpp_drag_button_vars"/>
 
-		<include layout="@layout/cpp_app_button_copy" />
+		<include layout="@layout/cpp_app_button_copy"/>
 
-		<include layout="@layout/cpp_drag_button_7" />
+		<include layout="@layout/cpp_drag_button_7"/>
 
-		<include layout="@layout/cpp_drag_button_8" />
+		<include layout="@layout/cpp_drag_button_8"/>
 
-		<include layout="@layout/cpp_drag_button_9" />
+		<include layout="@layout/cpp_drag_button_9"/>
 
-		<include layout="@layout/cpp_drag_button_multiplication" />
+		<include layout="@layout/cpp_drag_button_multiplication"/>
 
-		<include layout="@layout/cpp_drag_button_division" />
+		<include layout="@layout/cpp_drag_button_division"/>
 
-		<include layout="@layout/cpp_drag_button_equals" />
+		<include layout="@layout/cpp_drag_button_equals"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_functions" />
+		<include layout="@layout/cpp_drag_button_functions"/>
 
-		<include layout="@layout/cpp_app_button_paste" />
+		<include layout="@layout/cpp_app_button_paste"/>
 
-		<include layout="@layout/cpp_drag_button_4" />
+		<include layout="@layout/cpp_drag_button_4"/>
 
-		<include layout="@layout/cpp_drag_button_5" />
+		<include layout="@layout/cpp_drag_button_5"/>
 
-		<include layout="@layout/cpp_drag_button_6" />
+		<include layout="@layout/cpp_drag_button_6"/>
 
-		<include layout="@layout/cpp_drag_button_plus" />
+		<include layout="@layout/cpp_drag_button_plus"/>
 
-		<include layout="@layout/cpp_drag_button_subtraction" />
+		<include layout="@layout/cpp_drag_button_subtraction"/>
 
-		<include layout="@layout/cpp_drag_button_round_brackets" />
+		<include layout="@layout/cpp_drag_button_round_brackets"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_operators" />
+		<include layout="@layout/cpp_drag_button_operators"/>
 
-		<include layout="@layout/cpp_app_button_donate" />
+		<include layout="@layout/cpp_app_button_donate"/>
 
-		<include layout="@layout/cpp_drag_button_1" />
+		<include layout="@layout/cpp_drag_button_1"/>
 
-		<include layout="@layout/cpp_drag_button_2" />
+		<include layout="@layout/cpp_drag_button_2"/>
 
-		<include layout="@layout/cpp_drag_button_3" />
+		<include layout="@layout/cpp_drag_button_3"/>
 
-		<include layout="@layout/cpp_drag_button_0" />
+		<include layout="@layout/cpp_drag_button_0"/>
 
-		<include layout="@layout/cpp_drag_button_dot" />
+		<include layout="@layout/cpp_drag_button_dot"/>
 
-		<include layout="@layout/cpp_drag_button_history" />
+		<include layout="@layout/cpp_drag_button_history"/>
 
 	</LinearLayout>
 
diff --git a/android-app/res/layout-land/cpp_app_keyboard_mobile.xml b/android-app/res/layout-land/cpp_app_keyboard_mobile.xml
index 27fd356a..0dbc7132 100644
--- a/android-app/res/layout-land/cpp_app_keyboard_mobile.xml
+++ b/android-app/res/layout-land/cpp_app_keyboard_mobile.xml
@@ -1,76 +1,98 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:orientation="vertical">
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent"
+			  a:orientation="vertical">
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_vars" />
+		<include layout="@layout/cpp_drag_button_vars"/>
 
-		<include layout="@layout/cpp_app_button_copy" />
+		<include layout="@layout/cpp_app_button_copy"/>
 
-		<include layout="@layout/cpp_drag_button_7" />
+		<include layout="@layout/cpp_drag_button_7"/>
 
-		<include layout="@layout/cpp_drag_button_8" />
+		<include layout="@layout/cpp_drag_button_8"/>
 
-		<include layout="@layout/cpp_drag_button_9" />
+		<include layout="@layout/cpp_drag_button_9"/>
 
-		<include layout="@layout/cpp_drag_button_multiplication" />
+		<include layout="@layout/cpp_drag_button_multiplication"/>
 
-		<include layout="@layout/cpp_drag_button_division" />
+		<include layout="@layout/cpp_drag_button_division"/>
 
-		<include layout="@layout/cpp_drag_button_equals" />
+		<include layout="@layout/cpp_drag_button_equals"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_functions" />
+		<include layout="@layout/cpp_drag_button_functions"/>
 
-		<include layout="@layout/cpp_app_button_paste" />
+		<include layout="@layout/cpp_app_button_paste"/>
 
-		<include layout="@layout/cpp_drag_button_4" />
+		<include layout="@layout/cpp_drag_button_4"/>
 
-		<include layout="@layout/cpp_drag_button_5" />
+		<include layout="@layout/cpp_drag_button_5"/>
 
-		<include layout="@layout/cpp_drag_button_6" />
+		<include layout="@layout/cpp_drag_button_6"/>
 
-		<include layout="@layout/cpp_drag_button_plus" />
+		<include layout="@layout/cpp_drag_button_plus"/>
 
-		<include layout="@layout/cpp_drag_button_subtraction" />
+		<include layout="@layout/cpp_drag_button_subtraction"/>
 
-		<include layout="@layout/cpp_drag_button_round_brackets" />
+		<include layout="@layout/cpp_drag_button_round_brackets"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_operators" />
+		<include layout="@layout/cpp_drag_button_operators"/>
 
-		<include layout="@layout/cpp_app_button_donate" />
+		<include layout="@layout/cpp_app_button_donate"/>
 
-		<include layout="@layout/cpp_drag_button_1" />
+		<include layout="@layout/cpp_drag_button_1"/>
 
-		<include layout="@layout/cpp_drag_button_2" />
+		<include layout="@layout/cpp_drag_button_2"/>
 
-		<include layout="@layout/cpp_drag_button_3" />
+		<include layout="@layout/cpp_drag_button_3"/>
 
-		<include layout="@layout/cpp_drag_button_0" />
+		<include layout="@layout/cpp_drag_button_0"/>
 
-		<include layout="@layout/cpp_drag_button_dot" />
+		<include layout="@layout/cpp_drag_button_dot"/>
 
-		<include layout="@layout/cpp_drag_button_history" />
+		<include layout="@layout/cpp_drag_button_history"/>
 
 	</LinearLayout>
 
diff --git a/android-app/res/layout-land/main_calculator.xml b/android-app/res/layout-land/main_calculator.xml
index df436cb4..6b6284be 100644
--- a/android-app/res/layout-land/main_calculator.xml
+++ b/android-app/res/layout-land/main_calculator.xml
@@ -1,15 +1,31 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_layout"
-	a:orientation="vertical"
-	style="?cpp_main_layout_style">
+			  a:id="@+id/main_layout"
+			  a:orientation="vertical"
+			  style="?cpp_main_layout_style">
 
-	<include layout="@layout/main_first_pane" />
+	<include layout="@layout/main_first_pane"/>
 
 </LinearLayout>
diff --git a/android-app/res/layout-land/main_calculator_mobile.xml b/android-app/res/layout-land/main_calculator_mobile.xml
index 5425f95f..010d17a0 100644
--- a/android-app/res/layout-land/main_calculator_mobile.xml
+++ b/android-app/res/layout-land/main_calculator_mobile.xml
@@ -1,15 +1,31 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_layout"
-	a:orientation="vertical"
-	style="?cpp_main_layout_style">
+			  a:id="@+id/main_layout"
+			  a:orientation="vertical"
+			  style="?cpp_main_layout_style">
 
-	<include layout="@layout/main_first_pane_mobile" />
+	<include layout="@layout/main_first_pane_mobile"/>
 
 </LinearLayout>
diff --git a/android-app/res/layout-land/main_first_pane.xml b/android-app/res/layout-land/main_first_pane.xml
index 110322e3..9141e043 100644
--- a/android-app/res/layout-land/main_first_pane.xml
+++ b/android-app/res/layout-land/main_first_pane.xml
@@ -1,69 +1,85 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:orientation="vertical"
-	a:layout_gravity="center">
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent"
+			  a:orientation="vertical"
+			  a:layout_gravity="center">
 
 	<LinearLayout
-		a:id="@+id/editorContainer"
-		a:layout_weight="2"
-		a:layout_width="match_parent"
-		a:layout_height="0dp" />
+			a:id="@+id/editorContainer"
+			a:layout_weight="2"
+			a:layout_width="match_parent"
+			a:layout_height="0dp"/>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
 		<include
-			layout="@layout/cpp_drag_button_left"
-			a:layout_margin="@dimen/cpp_button_margin"
-			a:layout_width="0dp"
-			a:layout_height="match_parent"
-			a:layout_weight="1" />
+				layout="@layout/cpp_drag_button_left"
+				a:layout_margin="@dimen/cpp_button_margin"
+				a:layout_width="0dp"
+				a:layout_height="match_parent"
+				a:layout_weight="1"/>
 
 		<include
-			layout="@layout/cpp_app_button_erase"
-			a:layout_margin="@dimen/cpp_button_margin"
-			a:layout_width="0dp"
-			a:layout_height="match_parent"
-			a:layout_weight="1" />
+				layout="@layout/cpp_app_button_erase"
+				a:layout_margin="@dimen/cpp_button_margin"
+				a:layout_width="0dp"
+				a:layout_height="match_parent"
+				a:layout_weight="1"/>
 
 		<LinearLayout
-			a:id="@+id/displayContainer"
-			a:layout_height="match_parent"
-			a:layout_width="0dp"
-			a:layout_weight="4"
-			a:layout_margin="@dimen/cpp_display_margin_land" />
+				a:id="@+id/displayContainer"
+				a:layout_height="match_parent"
+				a:layout_width="0dp"
+				a:layout_weight="4"
+				a:layout_margin="@dimen/cpp_display_margin_land"/>
 
 		<include
-			layout="@layout/cpp_drag_button_clear"
-			a:layout_margin="@dimen/cpp_button_margin"
-			a:layout_width="0dp"
-			a:layout_height="match_parent"
-			a:layout_weight="1" />
+				layout="@layout/cpp_drag_button_clear"
+				a:layout_margin="@dimen/cpp_button_margin"
+				a:layout_width="0dp"
+				a:layout_height="match_parent"
+				a:layout_weight="1"/>
 
 		<include
-			layout="@layout/cpp_drag_button_right"
-			a:layout_margin="@dimen/cpp_button_margin"
-			a:layout_width="0dp"
-			a:layout_height="match_parent"
-			a:layout_weight="1" />
+				layout="@layout/cpp_drag_button_right"
+				a:layout_margin="@dimen/cpp_button_margin"
+				a:layout_width="0dp"
+				a:layout_height="match_parent"
+				a:layout_weight="1"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:id="@+id/keyboardContainer"
-		a:layout_weight="3"
-		a:layout_width="match_parent"
-		a:layout_height="0dp" />
+			a:id="@+id/keyboardContainer"
+			a:layout_weight="3"
+			a:layout_width="match_parent"
+			a:layout_height="0dp"/>
 
 
 </LinearLayout>
diff --git a/android-app/res/layout-land/main_first_pane_mobile.xml b/android-app/res/layout-land/main_first_pane_mobile.xml
index 292df005..6567d91e 100644
--- a/android-app/res/layout-land/main_first_pane_mobile.xml
+++ b/android-app/res/layout-land/main_first_pane_mobile.xml
@@ -1,69 +1,85 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:orientation="vertical"
-	a:layout_gravity="center">
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent"
+			  a:orientation="vertical"
+			  a:layout_gravity="center">
 
 	<LinearLayout
-		a:id="@+id/editorContainer"
-		a:layout_weight="2"
-		a:layout_width="match_parent"
-		a:layout_height="0dp" />
+			a:id="@+id/editorContainer"
+			a:layout_weight="2"
+			a:layout_width="match_parent"
+			a:layout_height="0dp"/>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
 		<include
-			layout="@layout/cpp_drag_button_left"
-			a:layout_margin="@dimen/cpp_button_margin"
-			a:layout_width="0dp"
-			a:layout_height="match_parent"
-			a:layout_weight="1" />
+				layout="@layout/cpp_drag_button_left"
+				a:layout_margin="@dimen/cpp_button_margin"
+				a:layout_width="0dp"
+				a:layout_height="match_parent"
+				a:layout_weight="1"/>
 
 		<include
-			layout="@layout/cpp_app_button_erase"
-			a:layout_margin="@dimen/cpp_button_margin"
-			a:layout_width="0dp"
-			a:layout_height="match_parent"
-			a:layout_weight="1" />
+				layout="@layout/cpp_app_button_erase"
+				a:layout_margin="@dimen/cpp_button_margin"
+				a:layout_width="0dp"
+				a:layout_height="match_parent"
+				a:layout_weight="1"/>
 
 		<LinearLayout
-			a:id="@+id/displayContainer"
-			a:layout_height="match_parent"
-			a:layout_width="0dp"
-			a:layout_weight="4"
-			a:layout_margin="@dimen/cpp_display_margin_land" />
+				a:id="@+id/displayContainer"
+				a:layout_height="match_parent"
+				a:layout_width="0dp"
+				a:layout_weight="4"
+				a:layout_margin="@dimen/cpp_display_margin_land"/>
 
 		<include
-			layout="@layout/cpp_drag_button_clear"
-			a:layout_margin="@dimen/cpp_button_margin"
-			a:layout_width="0dp"
-			a:layout_height="match_parent"
-			a:layout_weight="1" />
+				layout="@layout/cpp_drag_button_clear"
+				a:layout_margin="@dimen/cpp_button_margin"
+				a:layout_width="0dp"
+				a:layout_height="match_parent"
+				a:layout_weight="1"/>
 
 		<include
-			layout="@layout/cpp_drag_button_right"
-			a:layout_margin="@dimen/cpp_button_margin"
-			a:layout_width="0dp"
-			a:layout_height="match_parent"
-			a:layout_weight="1" />
+				layout="@layout/cpp_drag_button_right"
+				a:layout_margin="@dimen/cpp_button_margin"
+				a:layout_width="0dp"
+				a:layout_height="match_parent"
+				a:layout_weight="1"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:id="@+id/keyboardContainer"
-		a:layout_weight="3"
-		a:layout_width="match_parent"
-		a:layout_height="0dp" />
+			a:id="@+id/keyboardContainer"
+			a:layout_weight="3"
+			a:layout_width="match_parent"
+			a:layout_height="0dp"/>
 
 
 </LinearLayout>
diff --git a/android-app/res/layout-large-land/cpp_app_keyboard.xml b/android-app/res/layout-large-land/cpp_app_keyboard.xml
index 1d7696e5..b6cbb48c 100644
--- a/android-app/res/layout-large-land/cpp_app_keyboard.xml
+++ b/android-app/res/layout-large-land/cpp_app_keyboard.xml
@@ -1,88 +1,110 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:orientation="vertical">
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent"
+			  a:orientation="vertical">
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_left" />
+		<include layout="@layout/cpp_drag_button_left"/>
 
-		<include layout="@layout/cpp_app_button_erase" />
+		<include layout="@layout/cpp_app_button_erase"/>
 
-		<include layout="@layout/cpp_app_button_donate" />
+		<include layout="@layout/cpp_app_button_donate"/>
 
-		<include layout="@layout/cpp_drag_button_7" />
+		<include layout="@layout/cpp_drag_button_7"/>
 
-		<include layout="@layout/cpp_drag_button_8" />
+		<include layout="@layout/cpp_drag_button_8"/>
 
-		<include layout="@layout/cpp_drag_button_9" />
+		<include layout="@layout/cpp_drag_button_9"/>
 
-		<include layout="@layout/cpp_drag_button_multiplication" />
+		<include layout="@layout/cpp_drag_button_multiplication"/>
 
-		<include layout="@layout/cpp_drag_button_division" />
+		<include layout="@layout/cpp_drag_button_division"/>
 
-		<include layout="@layout/cpp_drag_button_clear" />
+		<include layout="@layout/cpp_drag_button_clear"/>
 
-		<include layout="@layout/cpp_drag_button_right" />
+		<include layout="@layout/cpp_drag_button_right"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_vars" />
+		<include layout="@layout/cpp_drag_button_vars"/>
 
-		<include layout="@layout/cpp_drag_button_functions" />
+		<include layout="@layout/cpp_drag_button_functions"/>
 
-		<include layout="@layout/cpp_drag_button_empty" />
+		<include layout="@layout/cpp_drag_button_empty"/>
 
-		<include layout="@layout/cpp_drag_button_4" />
+		<include layout="@layout/cpp_drag_button_4"/>
 
-		<include layout="@layout/cpp_drag_button_5" />
+		<include layout="@layout/cpp_drag_button_5"/>
 
-		<include layout="@layout/cpp_drag_button_6" />
+		<include layout="@layout/cpp_drag_button_6"/>
 
-		<include layout="@layout/cpp_drag_button_plus" />
+		<include layout="@layout/cpp_drag_button_plus"/>
 
-		<include layout="@layout/cpp_drag_button_subtraction" />
+		<include layout="@layout/cpp_drag_button_subtraction"/>
 
-		<include layout="@layout/cpp_app_button_copy" />
+		<include layout="@layout/cpp_app_button_copy"/>
 
-		<include layout="@layout/cpp_drag_button_equals" />
+		<include layout="@layout/cpp_drag_button_equals"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_empty" />
+		<include layout="@layout/cpp_drag_button_empty"/>
 
-		<include layout="@layout/cpp_drag_button_operators" />
+		<include layout="@layout/cpp_drag_button_operators"/>
 
-		<include layout="@layout/cpp_drag_button_dot" />
+		<include layout="@layout/cpp_drag_button_dot"/>
 
-		<include layout="@layout/cpp_drag_button_1" />
+		<include layout="@layout/cpp_drag_button_1"/>
 
-		<include layout="@layout/cpp_drag_button_2" />
+		<include layout="@layout/cpp_drag_button_2"/>
 
-		<include layout="@layout/cpp_drag_button_3" />
+		<include layout="@layout/cpp_drag_button_3"/>
 
-		<include layout="@layout/cpp_drag_button_0" />
+		<include layout="@layout/cpp_drag_button_0"/>
 
-		<include layout="@layout/cpp_drag_button_round_brackets" />
+		<include layout="@layout/cpp_drag_button_round_brackets"/>
 
-		<include layout="@layout/cpp_app_button_paste" />
+		<include layout="@layout/cpp_app_button_paste"/>
 
-		<include layout="@layout/cpp_drag_button_history" />
+		<include layout="@layout/cpp_drag_button_history"/>
 
 	</LinearLayout>
 
diff --git a/android-app/res/layout-large-land/main_calculator.xml b/android-app/res/layout-large-land/main_calculator.xml
index a64416f2..75131d56 100644
--- a/android-app/res/layout-large-land/main_calculator.xml
+++ b/android-app/res/layout-large-land/main_calculator.xml
@@ -1,60 +1,76 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_layout"
-	a:orientation="vertical"
-	style="?cpp_main_multi_pane_layout_style">
+			  a:id="@+id/main_layout"
+			  a:orientation="vertical"
+			  style="?cpp_main_multi_pane_layout_style">
 
 	<LinearLayout
-		a:layout_height="0dp"
-		a:layout_width="match_parent"
-		a:layout_weight="3"
-		a:orientation="horizontal"
-		a:baselineAligned="false">
+			a:layout_height="0dp"
+			a:layout_width="match_parent"
+			a:layout_weight="3"
+			a:orientation="horizontal"
+			a:baselineAligned="false">
 
 		<LinearLayout
-			a:layout_height="match_parent"
-			a:layout_width="0dp"
-			a:layout_weight="1"
-			a:orientation="vertical"
-			a:layout_gravity="center">
+				a:layout_height="match_parent"
+				a:layout_width="0dp"
+				a:layout_weight="1"
+				a:orientation="vertical"
+				a:layout_gravity="center">
 
 			<LinearLayout
-				a:id="@+id/editorContainer"
-				a:layout_height="0dp"
-				a:layout_width="match_parent"
-				style="?cpp_pane_style"
-				a:layout_weight="1" />
+					a:id="@+id/editorContainer"
+					a:layout_height="0dp"
+					a:layout_width="match_parent"
+					style="?cpp_pane_style"
+					a:layout_weight="1"/>
 
 			<LinearLayout
-				a:id="@+id/displayContainer"
-				a:layout_height="0dp"
-				a:layout_width="match_parent"
-				style="?cpp_pane_style"
-				a:layout_weight="1" />
+					a:id="@+id/displayContainer"
+					a:layout_height="0dp"
+					a:layout_width="match_parent"
+					style="?cpp_pane_style"
+					a:layout_weight="1"/>
 
 		</LinearLayout>
 
 		<LinearLayout
-			a:id="@+id/main_second_pane"
-			a:layout_height="match_parent"
-			a:layout_width="0dp"
-			a:layout_weight="1"
-			a:orientation="vertical"
-			style="?cpp_pane_style" />
+				a:id="@+id/main_second_pane"
+				a:layout_height="match_parent"
+				a:layout_width="0dp"
+				a:layout_weight="1"
+				a:orientation="vertical"
+				style="?cpp_pane_style"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:id="@+id/keyboardContainer"
-		a:layout_height="0dp"
-		a:layout_width="match_parent"
-		a:layout_weight="2"
-		style="?cpp_pane_style_transparent" />
+			a:id="@+id/keyboardContainer"
+			a:layout_height="0dp"
+			a:layout_width="match_parent"
+			a:layout_weight="2"
+			style="?cpp_pane_style_transparent"/>
 
 </LinearLayout>
diff --git a/android-app/res/layout-large/cpp_app_display.xml b/android-app/res/layout-large/cpp_app_display.xml
index 1972a194..58045b62 100644
--- a/android-app/res/layout-large/cpp_app_display.xml
+++ b/android-app/res/layout-large/cpp_app_display.xml
@@ -1,29 +1,45 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_fragment_layout"
-	style="?cpp_fragment_layout_style"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent">
+			  a:id="@+id/main_fragment_layout"
+			  style="?cpp_fragment_layout_style"
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent">
 
 	<TextView
-		a:id="@+id/fragment_title"
-		a:layout_height="wrap_content"
-		a:layout_width="match_parent"
-		style="?cpp_fragment_title_style" />
+			a:id="@+id/fragment_title"
+			a:layout_height="wrap_content"
+			a:layout_width="match_parent"
+			style="?cpp_fragment_title_style"/>
 
 	<org.solovyev.android.calculator.AndroidCalculatorDisplayView
-		a:id="@+id/calculator_display"
-		style="@style/cpp_display_style"
-		a:inputType="textMultiLine"
-		a:maxLines="3"
-		a:scrollHorizontally="false"
-		a:scrollbars="none" />
+			a:id="@+id/calculator_display"
+			style="@style/cpp_display_style"
+			a:inputType="textMultiLine"
+			a:maxLines="3"
+			a:scrollHorizontally="false"
+			a:scrollbars="none"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout-large/cpp_app_editor.xml b/android-app/res/layout-large/cpp_app_editor.xml
index 42895176..888e7b86 100644
--- a/android-app/res/layout-large/cpp_app_editor.xml
+++ b/android-app/res/layout-large/cpp_app_editor.xml
@@ -1,29 +1,45 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_fragment_layout"
-	style="?cpp_fragment_layout_style"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent">
+			  a:id="@+id/main_fragment_layout"
+			  style="?cpp_fragment_layout_style"
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent">
 
 	<TextView
-		a:id="@+id/fragment_title"
-		a:layout_height="wrap_content"
-		a:layout_width="match_parent"
-		style="?cpp_fragment_title_style" />
+			a:id="@+id/fragment_title"
+			a:layout_height="wrap_content"
+			a:layout_width="match_parent"
+			style="?cpp_fragment_title_style"/>
 
 	<org.solovyev.android.calculator.AndroidCalculatorEditorView
-		a:id="@+id/calculator_editor"
-		style="@style/cpp_editor_style"
-		a:textIsSelectable="true"
-		a:singleLine="false"
-		a:scrollbars="vertical"
-		a:hint="@string/c_calc_editor_hint" />
+			a:id="@+id/calculator_editor"
+			style="@style/cpp_editor_style"
+			a:textIsSelectable="true"
+			a:singleLine="false"
+			a:scrollbars="vertical"
+			a:hint="@string/c_calc_editor_hint"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout-large/cpp_app_keyboard.xml b/android-app/res/layout-large/cpp_app_keyboard.xml
index ac1d02c4..cccbd929 100644
--- a/android-app/res/layout-large/cpp_app_keyboard.xml
+++ b/android-app/res/layout-large/cpp_app_keyboard.xml
@@ -1,91 +1,113 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:orientation="vertical">
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent"
+			  a:orientation="vertical">
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_left" />
+		<include layout="@layout/cpp_drag_button_left"/>
 
-		<include layout="@layout/cpp_app_button_erase" />
+		<include layout="@layout/cpp_app_button_erase"/>
 
-		<include layout="@layout/cpp_drag_button_7" />
+		<include layout="@layout/cpp_drag_button_7"/>
 
-		<include layout="@layout/cpp_drag_button_8" />
+		<include layout="@layout/cpp_drag_button_8"/>
 
-		<include layout="@layout/cpp_drag_button_9" />
+		<include layout="@layout/cpp_drag_button_9"/>
 
-		<include layout="@layout/cpp_drag_button_multiplication" />
+		<include layout="@layout/cpp_drag_button_multiplication"/>
 
-		<include layout="@layout/cpp_drag_button_right" />
+		<include layout="@layout/cpp_drag_button_right"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_vars" />
+		<include layout="@layout/cpp_drag_button_vars"/>
 
-		<include layout="@layout/cpp_drag_button_clear" />
+		<include layout="@layout/cpp_drag_button_clear"/>
 
-		<include layout="@layout/cpp_drag_button_4" />
+		<include layout="@layout/cpp_drag_button_4"/>
 
-		<include layout="@layout/cpp_drag_button_5" />
+		<include layout="@layout/cpp_drag_button_5"/>
 
-		<include layout="@layout/cpp_drag_button_6" />
+		<include layout="@layout/cpp_drag_button_6"/>
 
-		<include layout="@layout/cpp_drag_button_division" />
+		<include layout="@layout/cpp_drag_button_division"/>
 
-		<include layout="@layout/cpp_app_button_copy" />
+		<include layout="@layout/cpp_app_button_copy"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_functions" />
+		<include layout="@layout/cpp_drag_button_functions"/>
 
-		<include layout="@layout/cpp_drag_button_equals" />
+		<include layout="@layout/cpp_drag_button_equals"/>
 
-		<include layout="@layout/cpp_drag_button_1" />
+		<include layout="@layout/cpp_drag_button_1"/>
 
-		<include layout="@layout/cpp_drag_button_2" />
+		<include layout="@layout/cpp_drag_button_2"/>
 
-		<include layout="@layout/cpp_drag_button_3" />
+		<include layout="@layout/cpp_drag_button_3"/>
 
-		<include layout="@layout/cpp_drag_button_plus" />
+		<include layout="@layout/cpp_drag_button_plus"/>
 
-		<include layout="@layout/cpp_app_button_paste" />
+		<include layout="@layout/cpp_app_button_paste"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_operators" />
+		<include layout="@layout/cpp_drag_button_operators"/>
 
-		<include layout="@layout/cpp_app_button_donate" />
+		<include layout="@layout/cpp_app_button_donate"/>
 
-		<include layout="@layout/cpp_drag_button_round_brackets" />
+		<include layout="@layout/cpp_drag_button_round_brackets"/>
 
-		<include layout="@layout/cpp_drag_button_0" />
+		<include layout="@layout/cpp_drag_button_0"/>
 
-		<include layout="@layout/cpp_drag_button_dot" />
+		<include layout="@layout/cpp_drag_button_dot"/>
 
-		<include layout="@layout/cpp_drag_button_subtraction" />
+		<include layout="@layout/cpp_drag_button_subtraction"/>
 
-		<include layout="@layout/cpp_drag_button_history" />
+		<include layout="@layout/cpp_drag_button_history"/>
 
 	</LinearLayout>
 
diff --git a/android-app/res/layout-large/main_calculator.xml b/android-app/res/layout-large/main_calculator.xml
index 12fcb52e..181d1ad7 100644
--- a/android-app/res/layout-large/main_calculator.xml
+++ b/android-app/res/layout-large/main_calculator.xml
@@ -1,60 +1,76 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_layout"
-	a:orientation="vertical"
-	style="?cpp_main_multi_pane_layout_style">
+			  a:id="@+id/main_layout"
+			  a:orientation="vertical"
+			  style="?cpp_main_multi_pane_layout_style">
 
 	<LinearLayout
-		a:layout_height="0dp"
-		a:layout_width="match_parent"
-		a:layout_weight="3"
-		a:orientation="horizontal"
-		a:baselineAligned="false">
+			a:layout_height="0dp"
+			a:layout_width="match_parent"
+			a:layout_weight="3"
+			a:orientation="horizontal"
+			a:baselineAligned="false">
 
 		<LinearLayout
-			a:layout_height="match_parent"
-			a:layout_width="0dp"
-			a:layout_weight="1"
-			a:orientation="vertical"
-			a:layout_gravity="center">
+				a:layout_height="match_parent"
+				a:layout_width="0dp"
+				a:layout_weight="1"
+				a:orientation="vertical"
+				a:layout_gravity="center">
 
 			<LinearLayout
-				a:id="@+id/editorContainer"
-				a:layout_height="0dp"
-				a:layout_width="match_parent"
-				style="?cpp_pane_style"
-				a:layout_weight="3" />
+					a:id="@+id/editorContainer"
+					a:layout_height="0dp"
+					a:layout_width="match_parent"
+					style="?cpp_pane_style"
+					a:layout_weight="3"/>
 
 			<LinearLayout
-				a:id="@+id/displayContainer"
-				a:layout_height="0dp"
-				a:layout_width="match_parent"
-				style="?cpp_pane_style"
-				a:layout_weight="1" />
+					a:id="@+id/displayContainer"
+					a:layout_height="0dp"
+					a:layout_width="match_parent"
+					style="?cpp_pane_style"
+					a:layout_weight="1"/>
 
 		</LinearLayout>
 
 		<LinearLayout
-			a:id="@+id/main_second_pane"
-			a:layout_height="match_parent"
-			a:layout_width="0dp"
-			a:layout_weight="1"
-			a:orientation="vertical"
-			style="?cpp_pane_style" />
+				a:id="@+id/main_second_pane"
+				a:layout_height="match_parent"
+				a:layout_width="0dp"
+				a:layout_weight="1"
+				a:orientation="vertical"
+				style="?cpp_pane_style"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:id="@+id/keyboardContainer"
-		a:layout_height="0dp"
-		a:layout_width="match_parent"
-		a:layout_weight="2"
-		style="?cpp_pane_style_transparent" />
+			a:id="@+id/keyboardContainer"
+			a:layout_height="0dp"
+			a:layout_width="match_parent"
+			a:layout_weight="2"
+			style="?cpp_pane_style_transparent"/>
 
 </LinearLayout>
diff --git a/android-app/res/layout-xlarge-land/cpp_app_keyboard.xml b/android-app/res/layout-xlarge-land/cpp_app_keyboard.xml
index 358006f5..5d2506eb 100644
--- a/android-app/res/layout-xlarge-land/cpp_app_keyboard.xml
+++ b/android-app/res/layout-xlarge-land/cpp_app_keyboard.xml
@@ -1,77 +1,99 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:orientation="vertical">
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent"
+			  a:orientation="vertical">
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_left" />
+		<include layout="@layout/cpp_drag_button_left"/>
 
-		<include layout="@layout/cpp_drag_button_vars" />
+		<include layout="@layout/cpp_drag_button_vars"/>
 
-		<include layout="@layout/cpp_app_button_copy" />
+		<include layout="@layout/cpp_app_button_copy"/>
 
-		<include layout="@layout/cpp_drag_button_6" />
+		<include layout="@layout/cpp_drag_button_6"/>
 
-		<include layout="@layout/cpp_drag_button_7" />
+		<include layout="@layout/cpp_drag_button_7"/>
 
-		<include layout="@layout/cpp_drag_button_8" />
+		<include layout="@layout/cpp_drag_button_8"/>
 
-		<include layout="@layout/cpp_drag_button_9" />
+		<include layout="@layout/cpp_drag_button_9"/>
 
-		<include layout="@layout/cpp_drag_button_0" />
+		<include layout="@layout/cpp_drag_button_0"/>
 
-		<include layout="@layout/cpp_drag_button_multiplication" />
+		<include layout="@layout/cpp_drag_button_multiplication"/>
 
-		<include layout="@layout/cpp_drag_button_division" />
+		<include layout="@layout/cpp_drag_button_division"/>
 
-		<include layout="@layout/cpp_drag_button_equals" />
+		<include layout="@layout/cpp_drag_button_equals"/>
 
-		<include layout="@layout/cpp_drag_button_operators" />
+		<include layout="@layout/cpp_drag_button_operators"/>
 
-		<include layout="@layout/cpp_app_button_donate" />
+		<include layout="@layout/cpp_app_button_donate"/>
 
-		<include layout="@layout/cpp_drag_button_right" />
+		<include layout="@layout/cpp_drag_button_right"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_app_button_erase" />
+		<include layout="@layout/cpp_app_button_erase"/>
 
-		<include layout="@layout/cpp_drag_button_functions" />
+		<include layout="@layout/cpp_drag_button_functions"/>
 
-		<include layout="@layout/cpp_app_button_paste" />
+		<include layout="@layout/cpp_app_button_paste"/>
 
-		<include layout="@layout/cpp_drag_button_1" />
+		<include layout="@layout/cpp_drag_button_1"/>
 
-		<include layout="@layout/cpp_drag_button_2" />
+		<include layout="@layout/cpp_drag_button_2"/>
 
-		<include layout="@layout/cpp_drag_button_3" />
+		<include layout="@layout/cpp_drag_button_3"/>
 
-		<include layout="@layout/cpp_drag_button_4" />
+		<include layout="@layout/cpp_drag_button_4"/>
 
-		<include layout="@layout/cpp_drag_button_5" />
+		<include layout="@layout/cpp_drag_button_5"/>
 
-		<include layout="@layout/cpp_drag_button_plus" />
+		<include layout="@layout/cpp_drag_button_plus"/>
 
-		<include layout="@layout/cpp_drag_button_subtraction" />
+		<include layout="@layout/cpp_drag_button_subtraction"/>
 
-		<include layout="@layout/cpp_drag_button_round_brackets" />
+		<include layout="@layout/cpp_drag_button_round_brackets"/>
 
-		<include layout="@layout/cpp_drag_button_dot" />
+		<include layout="@layout/cpp_drag_button_dot"/>
 
-		<include layout="@layout/cpp_drag_button_history" />
+		<include layout="@layout/cpp_drag_button_history"/>
 
-		<include layout="@layout/cpp_drag_button_clear" />
+		<include layout="@layout/cpp_drag_button_clear"/>
 
 	</LinearLayout>
 
diff --git a/android-app/res/layout-xlarge-land/main_calculator.xml b/android-app/res/layout-xlarge-land/main_calculator.xml
index 1abc2d08..5abdf0e1 100644
--- a/android-app/res/layout-xlarge-land/main_calculator.xml
+++ b/android-app/res/layout-xlarge-land/main_calculator.xml
@@ -1,60 +1,76 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_layout"
-	a:orientation="vertical"
-	style="?cpp_main_multi_pane_layout_style">
+			  a:id="@+id/main_layout"
+			  a:orientation="vertical"
+			  style="?cpp_main_multi_pane_layout_style">
 
 	<LinearLayout
-		a:layout_height="0dp"
-		a:layout_width="match_parent"
-		a:layout_weight="5"
-		a:orientation="horizontal"
-		a:baselineAligned="false">
+			a:layout_height="0dp"
+			a:layout_width="match_parent"
+			a:layout_weight="5"
+			a:orientation="horizontal"
+			a:baselineAligned="false">
 
 		<LinearLayout
-			a:layout_height="match_parent"
-			a:layout_width="0dp"
-			a:layout_weight="1"
-			a:orientation="vertical"
-			a:layout_gravity="center">
+				a:layout_height="match_parent"
+				a:layout_width="0dp"
+				a:layout_weight="1"
+				a:orientation="vertical"
+				a:layout_gravity="center">
 
 			<LinearLayout
-				a:id="@+id/editorContainer"
-				a:layout_height="0dp"
-				a:layout_width="match_parent"
-				style="?cpp_pane_style"
-				a:layout_weight="3" />
+					a:id="@+id/editorContainer"
+					a:layout_height="0dp"
+					a:layout_width="match_parent"
+					style="?cpp_pane_style"
+					a:layout_weight="3"/>
 
 			<LinearLayout
-				a:id="@+id/displayContainer"
-				a:layout_height="0dp"
-				a:layout_width="match_parent"
-				style="?cpp_pane_style"
-				a:layout_weight="1" />
+					a:id="@+id/displayContainer"
+					a:layout_height="0dp"
+					a:layout_width="match_parent"
+					style="?cpp_pane_style"
+					a:layout_weight="1"/>
 
 		</LinearLayout>
 
 		<LinearLayout
-			a:id="@+id/main_second_pane"
-			a:layout_height="match_parent"
-			a:layout_width="0dp"
-			a:layout_weight="1"
-			a:orientation="vertical"
-			style="?cpp_pane_style" />
+				a:id="@+id/main_second_pane"
+				a:layout_height="match_parent"
+				a:layout_width="0dp"
+				a:layout_weight="1"
+				a:orientation="vertical"
+				style="?cpp_pane_style"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:id="@+id/keyboardContainer"
-		a:layout_height="0dp"
-		a:layout_width="match_parent"
-		a:layout_weight="1"
-		style="?cpp_pane_style_transparent" />
+			a:id="@+id/keyboardContainer"
+			a:layout_height="0dp"
+			a:layout_width="match_parent"
+			a:layout_weight="1"
+			style="?cpp_pane_style_transparent"/>
 
 </LinearLayout>
diff --git a/android-app/res/layout-xlarge/cpp_app_display.xml b/android-app/res/layout-xlarge/cpp_app_display.xml
index 1972a194..58045b62 100644
--- a/android-app/res/layout-xlarge/cpp_app_display.xml
+++ b/android-app/res/layout-xlarge/cpp_app_display.xml
@@ -1,29 +1,45 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_fragment_layout"
-	style="?cpp_fragment_layout_style"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent">
+			  a:id="@+id/main_fragment_layout"
+			  style="?cpp_fragment_layout_style"
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent">
 
 	<TextView
-		a:id="@+id/fragment_title"
-		a:layout_height="wrap_content"
-		a:layout_width="match_parent"
-		style="?cpp_fragment_title_style" />
+			a:id="@+id/fragment_title"
+			a:layout_height="wrap_content"
+			a:layout_width="match_parent"
+			style="?cpp_fragment_title_style"/>
 
 	<org.solovyev.android.calculator.AndroidCalculatorDisplayView
-		a:id="@+id/calculator_display"
-		style="@style/cpp_display_style"
-		a:inputType="textMultiLine"
-		a:maxLines="3"
-		a:scrollHorizontally="false"
-		a:scrollbars="none" />
+			a:id="@+id/calculator_display"
+			style="@style/cpp_display_style"
+			a:inputType="textMultiLine"
+			a:maxLines="3"
+			a:scrollHorizontally="false"
+			a:scrollbars="none"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout-xlarge/cpp_app_editor.xml b/android-app/res/layout-xlarge/cpp_app_editor.xml
index 42895176..888e7b86 100644
--- a/android-app/res/layout-xlarge/cpp_app_editor.xml
+++ b/android-app/res/layout-xlarge/cpp_app_editor.xml
@@ -1,29 +1,45 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_fragment_layout"
-	style="?cpp_fragment_layout_style"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent">
+			  a:id="@+id/main_fragment_layout"
+			  style="?cpp_fragment_layout_style"
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent">
 
 	<TextView
-		a:id="@+id/fragment_title"
-		a:layout_height="wrap_content"
-		a:layout_width="match_parent"
-		style="?cpp_fragment_title_style" />
+			a:id="@+id/fragment_title"
+			a:layout_height="wrap_content"
+			a:layout_width="match_parent"
+			style="?cpp_fragment_title_style"/>
 
 	<org.solovyev.android.calculator.AndroidCalculatorEditorView
-		a:id="@+id/calculator_editor"
-		style="@style/cpp_editor_style"
-		a:textIsSelectable="true"
-		a:singleLine="false"
-		a:scrollbars="vertical"
-		a:hint="@string/c_calc_editor_hint" />
+			a:id="@+id/calculator_editor"
+			style="@style/cpp_editor_style"
+			a:textIsSelectable="true"
+			a:singleLine="false"
+			a:scrollbars="vertical"
+			a:hint="@string/c_calc_editor_hint"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout-xlarge/cpp_app_keyboard.xml b/android-app/res/layout-xlarge/cpp_app_keyboard.xml
index a31f7f8b..c8298689 100644
--- a/android-app/res/layout-xlarge/cpp_app_keyboard.xml
+++ b/android-app/res/layout-xlarge/cpp_app_keyboard.xml
@@ -1,99 +1,121 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:orientation="vertical">
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent"
+			  a:orientation="vertical">
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_left" />
+		<include layout="@layout/cpp_drag_button_left"/>
 
-		<include layout="@layout/cpp_app_button_erase" />
+		<include layout="@layout/cpp_app_button_erase"/>
 
-		<include layout="@layout/cpp_drag_button_empty" />
+		<include layout="@layout/cpp_drag_button_empty"/>
 
-		<include layout="@layout/cpp_drag_button_empty" />
+		<include layout="@layout/cpp_drag_button_empty"/>
 
-		<include layout="@layout/cpp_drag_button_empty" />
+		<include layout="@layout/cpp_drag_button_empty"/>
 
-		<include layout="@layout/cpp_drag_button_empty" />
+		<include layout="@layout/cpp_drag_button_empty"/>
 
-		<include layout="@layout/cpp_drag_button_clear" />
+		<include layout="@layout/cpp_drag_button_clear"/>
 
-		<include layout="@layout/cpp_drag_button_right" />
+		<include layout="@layout/cpp_drag_button_right"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_vars" />
+		<include layout="@layout/cpp_drag_button_vars"/>
 
-		<include layout="@layout/cpp_app_button_copy" />
+		<include layout="@layout/cpp_app_button_copy"/>
 
-		<include layout="@layout/cpp_drag_button_7" />
+		<include layout="@layout/cpp_drag_button_7"/>
 
-		<include layout="@layout/cpp_drag_button_8" />
+		<include layout="@layout/cpp_drag_button_8"/>
 
-		<include layout="@layout/cpp_drag_button_9" />
+		<include layout="@layout/cpp_drag_button_9"/>
 
-		<include layout="@layout/cpp_drag_button_multiplication" />
+		<include layout="@layout/cpp_drag_button_multiplication"/>
 
-		<include layout="@layout/cpp_drag_button_division" />
+		<include layout="@layout/cpp_drag_button_division"/>
 
-		<include layout="@layout/cpp_drag_button_equals" />
+		<include layout="@layout/cpp_drag_button_equals"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_functions" />
+		<include layout="@layout/cpp_drag_button_functions"/>
 
-		<include layout="@layout/cpp_app_button_paste" />
+		<include layout="@layout/cpp_app_button_paste"/>
 
-		<include layout="@layout/cpp_drag_button_4" />
+		<include layout="@layout/cpp_drag_button_4"/>
 
-		<include layout="@layout/cpp_drag_button_5" />
+		<include layout="@layout/cpp_drag_button_5"/>
 
-		<include layout="@layout/cpp_drag_button_6" />
+		<include layout="@layout/cpp_drag_button_6"/>
 
-		<include layout="@layout/cpp_drag_button_plus" />
+		<include layout="@layout/cpp_drag_button_plus"/>
 
-		<include layout="@layout/cpp_drag_button_subtraction" />
+		<include layout="@layout/cpp_drag_button_subtraction"/>
 
-		<include layout="@layout/cpp_drag_button_round_brackets" />
+		<include layout="@layout/cpp_drag_button_round_brackets"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_operators" />
+		<include layout="@layout/cpp_drag_button_operators"/>
 
-		<include layout="@layout/cpp_app_button_donate" />
+		<include layout="@layout/cpp_app_button_donate"/>
 
-		<include layout="@layout/cpp_drag_button_1" />
+		<include layout="@layout/cpp_drag_button_1"/>
 
-		<include layout="@layout/cpp_drag_button_2" />
+		<include layout="@layout/cpp_drag_button_2"/>
 
-		<include layout="@layout/cpp_drag_button_3" />
+		<include layout="@layout/cpp_drag_button_3"/>
 
-		<include layout="@layout/cpp_drag_button_0" />
+		<include layout="@layout/cpp_drag_button_0"/>
 
-		<include layout="@layout/cpp_drag_button_dot" />
+		<include layout="@layout/cpp_drag_button_dot"/>
 
-		<include layout="@layout/cpp_drag_button_history" />
+		<include layout="@layout/cpp_drag_button_history"/>
 
 	</LinearLayout>
 
diff --git a/android-app/res/layout-xlarge/main_calculator.xml b/android-app/res/layout-xlarge/main_calculator.xml
index 5813c62a..11328246 100644
--- a/android-app/res/layout-xlarge/main_calculator.xml
+++ b/android-app/res/layout-xlarge/main_calculator.xml
@@ -1,60 +1,76 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_layout"
-	a:orientation="vertical"
-	style="?cpp_main_multi_pane_layout_style">
+			  a:id="@+id/main_layout"
+			  a:orientation="vertical"
+			  style="?cpp_main_multi_pane_layout_style">
 
 	<LinearLayout
-		a:layout_height="0dp"
-		a:layout_width="match_parent"
-		a:layout_weight="3"
-		a:orientation="horizontal"
-		a:baselineAligned="false">
+			a:layout_height="0dp"
+			a:layout_width="match_parent"
+			a:layout_weight="3"
+			a:orientation="horizontal"
+			a:baselineAligned="false">
 
 		<LinearLayout
-			a:layout_height="match_parent"
-			a:layout_width="0dp"
-			a:layout_weight="1"
-			a:orientation="vertical"
-			a:layout_gravity="center">
+				a:layout_height="match_parent"
+				a:layout_width="0dp"
+				a:layout_weight="1"
+				a:orientation="vertical"
+				a:layout_gravity="center">
 
 			<LinearLayout
-				a:id="@+id/editorContainer"
-				a:layout_height="0dp"
-				a:layout_width="match_parent"
-				style="?cpp_pane_style"
-				a:layout_weight="4" />
+					a:id="@+id/editorContainer"
+					a:layout_height="0dp"
+					a:layout_width="match_parent"
+					style="?cpp_pane_style"
+					a:layout_weight="4"/>
 
 			<LinearLayout
-				a:id="@+id/displayContainer"
-				a:layout_height="0dp"
-				a:layout_width="match_parent"
-				style="?cpp_pane_style"
-				a:layout_weight="1" />
+					a:id="@+id/displayContainer"
+					a:layout_height="0dp"
+					a:layout_width="match_parent"
+					style="?cpp_pane_style"
+					a:layout_weight="1"/>
 
 		</LinearLayout>
 
 		<LinearLayout
-			a:id="@+id/main_second_pane"
-			a:layout_height="match_parent"
-			a:layout_width="0dp"
-			a:layout_weight="1"
-			a:orientation="vertical"
-			style="?cpp_pane_style" />
+				a:id="@+id/main_second_pane"
+				a:layout_height="match_parent"
+				a:layout_width="0dp"
+				a:layout_weight="1"
+				a:orientation="vertical"
+				style="?cpp_pane_style"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:id="@+id/keyboardContainer"
-		a:layout_height="0dp"
-		a:layout_width="match_parent"
-		a:layout_weight="1"
-		style="?cpp_pane_style_transparent" />
+			a:id="@+id/keyboardContainer"
+			a:layout_height="0dp"
+			a:layout_width="match_parent"
+			a:layout_weight="1"
+			style="?cpp_pane_style_transparent"/>
 
 </LinearLayout>
diff --git a/android-app/res/layout/about_fragment.xml b/android-app/res/layout/about_fragment.xml
index 6e4ce686..9d79608b 100644
--- a/android-app/res/layout/about_fragment.xml
+++ b/android-app/res/layout/about_fragment.xml
@@ -1,34 +1,50 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:orientation="vertical"
-	a:layout_width="fill_parent"
-	a:layout_height="fill_parent"
-	a:background="#ff000000">
+			  a:orientation="vertical"
+			  a:layout_width="fill_parent"
+			  a:layout_height="fill_parent"
+			  a:background="#ff000000">
 
 	<ImageView
-		a:layout_width="wrap_content"
-		a:layout_height="wrap_content"
-		a:layout_gravity="center"
-		a:layout_weight="1"
-		a:padding="6dp"
-		a:src="@drawable/logo" />
+			a:layout_width="wrap_content"
+			a:layout_height="wrap_content"
+			a:layout_gravity="center"
+			a:layout_weight="1"
+			a:padding="6dp"
+			a:src="@drawable/logo"/>
 
 	<TextView
-		a:id="@+id/aboutTextView"
-		a:text="@string/c_about_content"
-		a:layout_height="fill_parent"
-		a:layout_width="fill_parent"
-		a:layout_gravity="top|center_horizontal"
-		a:layout_weight="1"
-		a:scrollbars="vertical"
-		style="@style/cpp_about_style" />
+			a:id="@+id/aboutTextView"
+			a:text="@string/c_about_content"
+			a:layout_height="fill_parent"
+			a:layout_width="fill_parent"
+			a:layout_gravity="top|center_horizontal"
+			a:layout_weight="1"
+			a:scrollbars="vertical"
+			style="@style/cpp_about_style"/>
 
 	<!--
 			a:scrollbarFadeDuration="0" is not support in  android_1.6_compatibility
diff --git a/android-app/res/layout/ad.xml b/android-app/res/layout/ad.xml
index 67513bd3..8c38f244 100644
--- a/android-app/res/layout/ad.xml
+++ b/android-app/res/layout/ad.xml
@@ -1,6 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/ad_parent_view"
-	a:layout_width="match_parent"
-	a:layout_height="wrap_content" />
+			  a:id="@+id/ad_parent_view"
+			  a:layout_width="match_parent"
+			  a:layout_height="wrap_content"/>
diff --git a/android-app/res/layout/calc_plot_view.xml b/android-app/res/layout/calc_plot_view.xml
index 81ee2c13..6ea70a99 100644
--- a/android-app/res/layout/calc_plot_view.xml
+++ b/android-app/res/layout/calc_plot_view.xml
@@ -1,16 +1,32 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/plot_view_container"
-	a:orientation="vertical"
-	a:layout_width="fill_parent"
-	a:layout_height="fill_parent">
+			  a:id="@+id/plot_view_container"
+			  a:orientation="vertical"
+			  a:layout_width="fill_parent"
+			  a:layout_height="fill_parent">
 
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_app_button_copy.xml b/android-app/res/layout/cpp_app_button_copy.xml
index 607b3188..6308ebf9 100644
--- a/android-app/res/layout/cpp_app_button_copy.xml
+++ b/android-app/res/layout/cpp_app_button_copy.xml
@@ -1,13 +1,29 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <ImageButton xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_copy"
-	a:src="@drawable/kb_copy"
-	style="?cpp_control_image_button_style"
-	a:onClick="copyButtonClickHandler" />
\ No newline at end of file
+			 a:id="@id/cpp_button_copy"
+			 a:src="@drawable/kb_copy"
+			 style="?cpp_control_image_button_style"
+			 a:onClick="copyButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_app_button_donate.xml b/android-app/res/layout/cpp_app_button_donate.xml
index c9992339..213bbeff 100644
--- a/android-app/res/layout/cpp_app_button_donate.xml
+++ b/android-app/res/layout/cpp_app_button_donate.xml
@@ -1,13 +1,29 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <ImageButton xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_like"
-	a:src="@drawable/kb_facebook"
-	style="?cpp_control_image_button_style"
-	a:onClick="likeButtonClickHandler" />
\ No newline at end of file
+			 a:id="@id/cpp_button_like"
+			 a:src="@drawable/kb_facebook"
+			 style="?cpp_control_image_button_style"
+			 a:onClick="likeButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_app_button_erase.xml b/android-app/res/layout/cpp_app_button_erase.xml
index dac0fb9f..f605dccf 100644
--- a/android-app/res/layout/cpp_app_button_erase.xml
+++ b/android-app/res/layout/cpp_app_button_erase.xml
@@ -1,13 +1,29 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <ImageButton xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_erase"
-	a:src="@drawable/kb_erase"
-	style="?cpp_control_image_button_style"
-	a:onClick="eraseButtonClickHandler" />
\ No newline at end of file
+			 a:id="@id/cpp_button_erase"
+			 a:src="@drawable/kb_erase"
+			 style="?cpp_control_image_button_style"
+			 a:onClick="eraseButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_app_button_paste.xml b/android-app/res/layout/cpp_app_button_paste.xml
index e80a089a..89057a17 100644
--- a/android-app/res/layout/cpp_app_button_paste.xml
+++ b/android-app/res/layout/cpp_app_button_paste.xml
@@ -1,13 +1,29 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <ImageButton xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_paste"
-	a:src="@drawable/kb_paste"
-	style="?cpp_control_image_button_style"
-	a:onClick="pasteButtonClickHandler" />
\ No newline at end of file
+			 a:id="@id/cpp_button_paste"
+			 a:src="@drawable/kb_paste"
+			 style="?cpp_control_image_button_style"
+			 a:onClick="pasteButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_app_display.xml b/android-app/res/layout/cpp_app_display.xml
index 7d3fc1cd..836fca7b 100644
--- a/android-app/res/layout/cpp_app_display.xml
+++ b/android-app/res/layout/cpp_app_display.xml
@@ -1,16 +1,32 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <org.solovyev.android.calculator.AndroidCalculatorDisplayView xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/calculator_display"
-	style="@style/cpp_display_style"
-	a:padding="@dimen/cpp_display_padding"
-	a:inputType="textMultiLine"
-	a:maxLines="3"
-	a:scrollHorizontally="false"
-	a:scrollbars="none" />
\ No newline at end of file
+															  a:id="@+id/calculator_display"
+															  style="@style/cpp_display_style"
+															  a:padding="@dimen/cpp_display_padding"
+															  a:inputType="textMultiLine"
+															  a:maxLines="3"
+															  a:scrollHorizontally="false"
+															  a:scrollbars="none"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_app_display_mobile.xml b/android-app/res/layout/cpp_app_display_mobile.xml
index e8632f4d..462bb091 100644
--- a/android-app/res/layout/cpp_app_display_mobile.xml
+++ b/android-app/res/layout/cpp_app_display_mobile.xml
@@ -1,16 +1,32 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <org.solovyev.android.calculator.AndroidCalculatorDisplayView xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/calculator_display"
-	style="@style/cpp_display_style"
-	a:padding="@dimen/cpp_display_padding"
-	a:inputType="textMultiLine"
-	a:maxLines="3"
-	a:scrollHorizontally="false"
-	a:scrollbars="none" />
\ No newline at end of file
+															  a:id="@+id/calculator_display"
+															  style="@style/cpp_display_style"
+															  a:padding="@dimen/cpp_display_padding"
+															  a:inputType="textMultiLine"
+															  a:maxLines="3"
+															  a:scrollHorizontally="false"
+															  a:scrollbars="none"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_app_editor.xml b/android-app/res/layout/cpp_app_editor.xml
index 12ebcd65..26415b84 100644
--- a/android-app/res/layout/cpp_app_editor.xml
+++ b/android-app/res/layout/cpp_app_editor.xml
@@ -1,24 +1,40 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_fragment_layout"
-	style="?cpp_fragment_layout_style"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:padding="@dimen/cpp_editor_padding">
+			  a:id="@+id/main_fragment_layout"
+			  style="?cpp_fragment_layout_style"
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent"
+			  a:padding="@dimen/cpp_editor_padding">
 
 	<org.solovyev.android.calculator.AndroidCalculatorEditorView
-		a:id="@+id/calculator_editor"
-		style="@style/cpp_editor_style"
-		a:textIsSelectable="true"
-		a:singleLine="false"
-		a:scrollbars="vertical"
-		a:hint="@string/c_calc_editor_hint" />
+			a:id="@+id/calculator_editor"
+			style="@style/cpp_editor_style"
+			a:textIsSelectable="true"
+			a:singleLine="false"
+			a:scrollbars="vertical"
+			a:hint="@string/c_calc_editor_hint"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_app_editor_mobile.xml b/android-app/res/layout/cpp_app_editor_mobile.xml
index 5ac01026..cdaaa15c 100644
--- a/android-app/res/layout/cpp_app_editor_mobile.xml
+++ b/android-app/res/layout/cpp_app_editor_mobile.xml
@@ -1,24 +1,40 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_fragment_layout"
-	style="?cpp_fragment_layout_style"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:padding="@dimen/cpp_editor_padding">
+			  a:id="@+id/main_fragment_layout"
+			  style="?cpp_fragment_layout_style"
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent"
+			  a:padding="@dimen/cpp_editor_padding">
 
 	<org.solovyev.android.calculator.AndroidCalculatorEditorView
-		a:id="@+id/calculator_editor"
-		style="@style/cpp_editor_mobile_style"
-		a:textIsSelectable="true"
-		a:singleLine="false"
-		a:scrollbars="vertical"
-		a:hint="@string/c_calc_editor_hint" />
+			a:id="@+id/calculator_editor"
+			style="@style/cpp_editor_mobile_style"
+			a:textIsSelectable="true"
+			a:singleLine="false"
+			a:scrollbars="vertical"
+			a:hint="@string/c_calc_editor_hint"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_app_keyboard.xml b/android-app/res/layout/cpp_app_keyboard.xml
index 9575c9cb..129a9970 100644
--- a/android-app/res/layout/cpp_app_keyboard.xml
+++ b/android-app/res/layout/cpp_app_keyboard.xml
@@ -1,93 +1,115 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:orientation="vertical">
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent"
+			  a:orientation="vertical">
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_7" />
+		<include layout="@layout/cpp_drag_button_7"/>
 
-		<include layout="@layout/cpp_drag_button_8" />
+		<include layout="@layout/cpp_drag_button_8"/>
 
-		<include layout="@layout/cpp_drag_button_9" />
+		<include layout="@layout/cpp_drag_button_9"/>
 
-		<include layout="@layout/cpp_drag_button_multiplication" />
+		<include layout="@layout/cpp_drag_button_multiplication"/>
 
-		<include layout="@layout/cpp_drag_button_clear" />
+		<include layout="@layout/cpp_drag_button_clear"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_4" />
+		<include layout="@layout/cpp_drag_button_4"/>
 
-		<include layout="@layout/cpp_drag_button_5" />
+		<include layout="@layout/cpp_drag_button_5"/>
 
-		<include layout="@layout/cpp_drag_button_6" />
+		<include layout="@layout/cpp_drag_button_6"/>
 
-		<include layout="@layout/cpp_drag_button_division" />
+		<include layout="@layout/cpp_drag_button_division"/>
 
-		<include layout="@layout/cpp_app_button_erase" />
+		<include layout="@layout/cpp_app_button_erase"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_1" />
+		<include layout="@layout/cpp_drag_button_1"/>
 
-		<include layout="@layout/cpp_drag_button_2" />
+		<include layout="@layout/cpp_drag_button_2"/>
 
-		<include layout="@layout/cpp_drag_button_3" />
+		<include layout="@layout/cpp_drag_button_3"/>
 
-		<include layout="@layout/cpp_drag_button_plus" />
+		<include layout="@layout/cpp_drag_button_plus"/>
 
-		<include layout="@layout/cpp_app_button_copy" />
+		<include layout="@layout/cpp_app_button_copy"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_round_brackets" />
+		<include layout="@layout/cpp_drag_button_round_brackets"/>
 
-		<include layout="@layout/cpp_drag_button_0" />
+		<include layout="@layout/cpp_drag_button_0"/>
 
-		<include layout="@layout/cpp_drag_button_dot" />
+		<include layout="@layout/cpp_drag_button_dot"/>
 
-		<include layout="@layout/cpp_drag_button_subtraction" />
+		<include layout="@layout/cpp_drag_button_subtraction"/>
 
-		<include layout="@layout/cpp_app_button_paste" />
+		<include layout="@layout/cpp_app_button_paste"/>
 
 	</LinearLayout>
 
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_left" />
+		<include layout="@layout/cpp_drag_button_left"/>
 
-		<include layout="@layout/cpp_drag_button_right" />
+		<include layout="@layout/cpp_drag_button_right"/>
 
-		<include layout="@layout/cpp_drag_button_vars" />
+		<include layout="@layout/cpp_drag_button_vars"/>
 
-		<include layout="@layout/cpp_drag_button_functions" />
+		<include layout="@layout/cpp_drag_button_functions"/>
 
-		<include layout="@layout/cpp_drag_button_history" />
+		<include layout="@layout/cpp_drag_button_history"/>
 
 	</LinearLayout>
 
diff --git a/android-app/res/layout/cpp_app_keyboard_mobile.xml b/android-app/res/layout/cpp_app_keyboard_mobile.xml
index e2d1b716..633a98c9 100644
--- a/android-app/res/layout/cpp_app_keyboard_mobile.xml
+++ b/android-app/res/layout/cpp_app_keyboard_mobile.xml
@@ -1,93 +1,115 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:orientation="vertical">
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent"
+			  a:orientation="vertical">
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_7" />
+		<include layout="@layout/cpp_drag_button_7"/>
 
-		<include layout="@layout/cpp_drag_button_8" />
+		<include layout="@layout/cpp_drag_button_8"/>
 
-		<include layout="@layout/cpp_drag_button_9" />
+		<include layout="@layout/cpp_drag_button_9"/>
 
-		<include layout="@layout/cpp_drag_button_multiplication" />
+		<include layout="@layout/cpp_drag_button_multiplication"/>
 
-		<include layout="@layout/cpp_drag_button_clear" />
+		<include layout="@layout/cpp_drag_button_clear"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_4" />
+		<include layout="@layout/cpp_drag_button_4"/>
 
-		<include layout="@layout/cpp_drag_button_5" />
+		<include layout="@layout/cpp_drag_button_5"/>
 
-		<include layout="@layout/cpp_drag_button_6" />
+		<include layout="@layout/cpp_drag_button_6"/>
 
-		<include layout="@layout/cpp_drag_button_division" />
+		<include layout="@layout/cpp_drag_button_division"/>
 
-		<include layout="@layout/cpp_app_button_erase" />
+		<include layout="@layout/cpp_app_button_erase"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_1" />
+		<include layout="@layout/cpp_drag_button_1"/>
 
-		<include layout="@layout/cpp_drag_button_2" />
+		<include layout="@layout/cpp_drag_button_2"/>
 
-		<include layout="@layout/cpp_drag_button_3" />
+		<include layout="@layout/cpp_drag_button_3"/>
 
-		<include layout="@layout/cpp_drag_button_plus" />
+		<include layout="@layout/cpp_drag_button_plus"/>
 
-		<include layout="@layout/cpp_app_button_copy" />
+		<include layout="@layout/cpp_app_button_copy"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_round_brackets" />
+		<include layout="@layout/cpp_drag_button_round_brackets"/>
 
-		<include layout="@layout/cpp_drag_button_0" />
+		<include layout="@layout/cpp_drag_button_0"/>
 
-		<include layout="@layout/cpp_drag_button_dot" />
+		<include layout="@layout/cpp_drag_button_dot"/>
 
-		<include layout="@layout/cpp_drag_button_subtraction" />
+		<include layout="@layout/cpp_drag_button_subtraction"/>
 
-		<include layout="@layout/cpp_app_button_paste" />
+		<include layout="@layout/cpp_app_button_paste"/>
 
 	</LinearLayout>
 
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
-		<include layout="@layout/cpp_drag_button_left" />
+		<include layout="@layout/cpp_drag_button_left"/>
 
-		<include layout="@layout/cpp_drag_button_right" />
+		<include layout="@layout/cpp_drag_button_right"/>
 
-		<include layout="@layout/cpp_drag_button_vars" />
+		<include layout="@layout/cpp_drag_button_vars"/>
 
-		<include layout="@layout/cpp_drag_button_functions" />
+		<include layout="@layout/cpp_drag_button_functions"/>
 
-		<include layout="@layout/cpp_drag_button_history" />
+		<include layout="@layout/cpp_drag_button_history"/>
 
 	</LinearLayout>
 
diff --git a/android-app/res/layout/cpp_dialog.xml b/android-app/res/layout/cpp_dialog.xml
index 7d8a72c2..98b27b29 100644
--- a/android-app/res/layout/cpp_dialog.xml
+++ b/android-app/res/layout/cpp_dialog.xml
@@ -1,8 +1,30 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/dialog_layout"
-	style="?cpp_dialog_style"
-	a:orientation="vertical">
+			  a:id="@+id/dialog_layout"
+			  style="?cpp_dialog_style"
+			  a:orientation="vertical">
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_dialog_fragment.xml b/android-app/res/layout/cpp_dialog_fragment.xml
index c0caff0b..8dda8994 100644
--- a/android-app/res/layout/cpp_dialog_fragment.xml
+++ b/android-app/res/layout/cpp_dialog_fragment.xml
@@ -1,39 +1,61 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_fragment_layout"
-	style="?cpp_fragment_layout_style"
-	a:layout_width="match_parent"
-	a:layout_gravity="center_horizontal"
-	a:layout_height="match_parent"
-	a:orientation="vertical">
+			  a:id="@+id/main_fragment_layout"
+			  style="?cpp_fragment_layout_style"
+			  a:layout_width="match_parent"
+			  a:layout_gravity="center_horizontal"
+			  a:layout_height="match_parent"
+			  a:orientation="vertical">
 
 	<TextView
-		a:id="@+id/cpp_dialog_message_textview"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:maxLines="10"
-		a:scrollbars="vertical" />
+			a:id="@+id/cpp_dialog_message_textview"
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content"
+			a:maxLines="10"
+			a:scrollbars="vertical"/>
 
 	<LinearLayout
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:orientation="horizontal">
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content"
+			a:orientation="horizontal">
 
 		<Button
-			a:id="@+id/cpp_copy_button"
-			a:text="@string/c_copy"
-			a:layout_width="0dp"
-			a:layout_height="wrap_content"
-			a:layout_weight="1"
-			a:visibility="gone" />
+				a:id="@+id/cpp_copy_button"
+				a:text="@string/c_copy"
+				a:layout_width="0dp"
+				a:layout_height="wrap_content"
+				a:layout_weight="1"
+				a:visibility="gone"/>
 
 		<Button
-			a:id="@+id/cpp_ok_button"
-			a:text="@string/ok"
-			a:layout_width="0dp"
-			a:layout_height="wrap_content"
-			a:layout_weight="1" />
+				a:id="@+id/cpp_ok_button"
+				a:text="@string/ok"
+				a:layout_width="0dp"
+				a:layout_height="wrap_content"
+				a:layout_weight="1"/>
 
 	</LinearLayout>
 
diff --git a/android-app/res/layout/cpp_drag_button_0.xml b/android-app/res/layout/cpp_drag_button_0.xml
index d5f48258..ba60d159 100644
--- a/android-app/res/layout/cpp_drag_button_0.xml
+++ b/android-app/res/layout/cpp_drag_button_0.xml
@@ -1,17 +1,33 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <org.solovyev.android.view.drag.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:id="@id/cpp_button_0"
-	c:textUp="00"
-	a:text="0"
-	c:textDown="000"
-	c:directionTextScale="0.5"
-	style="?cpp_digit_button_style"
-	a:onClick="digitButtonClickHandler" />
\ No newline at end of file
+													xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+													a:id="@id/cpp_button_0"
+													c:textUp="00"
+													a:text="0"
+													c:textDown="000"
+													c:directionTextScale="0.5"
+													style="?cpp_digit_button_style"
+													a:onClick="digitButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_1.xml b/android-app/res/layout/cpp_drag_button_1.xml
index 8b3a1fc8..93c495c6 100644
--- a/android-app/res/layout/cpp_drag_button_1.xml
+++ b/android-app/res/layout/cpp_drag_button_1.xml
@@ -1,17 +1,33 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <org.solovyev.android.view.drag.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:id="@id/cpp_button_1"
-	a:text="1"
-	c:textUp="sin"
-	c:textLeft="A"
-	c:textDown="asin"
-	style="?cpp_digit_button_style"
-	a:onClick="digitButtonClickHandler" />
\ No newline at end of file
+													xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+													a:id="@id/cpp_button_1"
+													a:text="1"
+													c:textUp="sin"
+													c:textLeft="A"
+													c:textDown="asin"
+													style="?cpp_digit_button_style"
+													a:onClick="digitButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_2.xml b/android-app/res/layout/cpp_drag_button_2.xml
index 3b7fb84f..080fd483 100644
--- a/android-app/res/layout/cpp_drag_button_2.xml
+++ b/android-app/res/layout/cpp_drag_button_2.xml
@@ -1,17 +1,33 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <org.solovyev.android.view.drag.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:id="@id/cpp_button_2"
-	a:text="2"
-	c:textUp="cos"
-	c:textLeft="B"
-	c:textDown="acos"
-	style="?cpp_digit_button_style"
-	a:onClick="digitButtonClickHandler" />
\ No newline at end of file
+													xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+													a:id="@id/cpp_button_2"
+													a:text="2"
+													c:textUp="cos"
+													c:textLeft="B"
+													c:textDown="acos"
+													style="?cpp_digit_button_style"
+													a:onClick="digitButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_3.xml b/android-app/res/layout/cpp_drag_button_3.xml
index 848c3b59..a6cc678d 100644
--- a/android-app/res/layout/cpp_drag_button_3.xml
+++ b/android-app/res/layout/cpp_drag_button_3.xml
@@ -1,17 +1,33 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <org.solovyev.android.view.drag.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:id="@id/cpp_button_3"
-	a:text="3"
-	c:textUp="tan"
-	c:textLeft="C"
-	c:textDown="atan"
-	style="?cpp_digit_button_style"
-	a:onClick="digitButtonClickHandler" />
\ No newline at end of file
+													xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+													a:id="@id/cpp_button_3"
+													a:text="3"
+													c:textUp="tan"
+													c:textLeft="C"
+													c:textDown="atan"
+													style="?cpp_digit_button_style"
+													a:onClick="digitButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_4.xml b/android-app/res/layout/cpp_drag_button_4.xml
index ff4dcf0a..7e45f7a7 100644
--- a/android-app/res/layout/cpp_drag_button_4.xml
+++ b/android-app/res/layout/cpp_drag_button_4.xml
@@ -1,16 +1,32 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 <org.solovyev.android.view.drag.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:id="@id/cpp_button_4"
-	a:text="4"
-	c:textUp="x"
-	c:textLeft="D"
-	c:textDown="y"
-	style="?cpp_digit_button_style"
-	a:onClick="digitButtonClickHandler" />
\ No newline at end of file
+													xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+													a:id="@id/cpp_button_4"
+													a:text="4"
+													c:textUp="x"
+													c:textLeft="D"
+													c:textDown="y"
+													style="?cpp_digit_button_style"
+													a:onClick="digitButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_5.xml b/android-app/res/layout/cpp_drag_button_5.xml
index 5e59d46c..37498bb2 100644
--- a/android-app/res/layout/cpp_drag_button_5.xml
+++ b/android-app/res/layout/cpp_drag_button_5.xml
@@ -1,16 +1,32 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 <org.solovyev.android.view.drag.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:id="@id/cpp_button_5"
-	a:text="5"
-	c:textUp="t"
-	c:textLeft="E"
-	c:textDown="j"
-	style="?cpp_digit_button_style"
-	a:onClick="digitButtonClickHandler" />
\ No newline at end of file
+													xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+													a:id="@id/cpp_button_5"
+													a:text="5"
+													c:textUp="t"
+													c:textLeft="E"
+													c:textDown="j"
+													style="?cpp_digit_button_style"
+													a:onClick="digitButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_6.xml b/android-app/res/layout/cpp_drag_button_6.xml
index f8c91c2e..f3a1cdc6 100644
--- a/android-app/res/layout/cpp_drag_button_6.xml
+++ b/android-app/res/layout/cpp_drag_button_6.xml
@@ -1,18 +1,34 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <org.solovyev.android.calculator.view.AngleUnitsButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	c:textUp="deg"
-	a:id="@id/cpp_button_6"
-	a:text="6"
-	c:textLeft="F"
-	c:textDown="rad"
-	c:directionTextScale="0.33;0.30;0.33;0.33"
-	style="?cpp_digit_button_style"
-	a:onClick="digitButtonClickHandler" />
\ No newline at end of file
+													   xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+													   c:textUp="deg"
+													   a:id="@id/cpp_button_6"
+													   a:text="6"
+													   c:textLeft="F"
+													   c:textDown="rad"
+													   c:directionTextScale="0.33;0.30;0.33;0.33"
+													   style="?cpp_digit_button_style"
+													   a:onClick="digitButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_7.xml b/android-app/res/layout/cpp_drag_button_7.xml
index fa222559..60257a31 100644
--- a/android-app/res/layout/cpp_drag_button_7.xml
+++ b/android-app/res/layout/cpp_drag_button_7.xml
@@ -1,18 +1,34 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <org.solovyev.android.view.drag.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:id="@id/cpp_button_7"
-	a:text="7"
-	c:textUp="i"
-	c:textLeft="0b:"
-	c:textDown="!"
-	c:directionTextScale="0.5;0.5;0.5;0.33"
-	style="?cpp_digit_button_style"
-	a:onClick="digitButtonClickHandler" />
\ No newline at end of file
+													xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+													a:id="@id/cpp_button_7"
+													a:text="7"
+													c:textUp="i"
+													c:textLeft="0b:"
+													c:textDown="!"
+													c:directionTextScale="0.5;0.5;0.5;0.33"
+													style="?cpp_digit_button_style"
+													a:onClick="digitButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_8.xml b/android-app/res/layout/cpp_drag_button_8.xml
index 7939be13..67193ef2 100644
--- a/android-app/res/layout/cpp_drag_button_8.xml
+++ b/android-app/res/layout/cpp_drag_button_8.xml
@@ -1,18 +1,34 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <org.solovyev.android.view.drag.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:id="@id/cpp_button_8"
-	a:text="8"
-	c:textUp="ln"
-	c:textLeft="0d:"
-	c:textDown="lg"
-	c:directionTextScale="0.5;0.5;0.5;0.33"
-	style="?cpp_digit_button_style"
-	a:onClick="digitButtonClickHandler" />
\ No newline at end of file
+													xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+													a:id="@id/cpp_button_8"
+													a:text="8"
+													c:textUp="ln"
+													c:textLeft="0d:"
+													c:textDown="lg"
+													c:directionTextScale="0.5;0.5;0.5;0.33"
+													style="?cpp_digit_button_style"
+													a:onClick="digitButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_9.xml b/android-app/res/layout/cpp_drag_button_9.xml
index 5714506d..85954d7d 100644
--- a/android-app/res/layout/cpp_drag_button_9.xml
+++ b/android-app/res/layout/cpp_drag_button_9.xml
@@ -1,18 +1,34 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <org.solovyev.android.view.drag.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:id="@id/cpp_button_9"
-	a:text="9"
-	c:textDown="e"
-	c:textLeft="0x:"
-	c:textUp="π"
-	c:directionTextScale="0.5;0.5;0.5;0.33"
-	style="?cpp_digit_button_style"
-	a:onClick="digitButtonClickHandler" />
\ No newline at end of file
+													xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+													a:id="@id/cpp_button_9"
+													a:text="9"
+													c:textDown="e"
+													c:textLeft="0x:"
+													c:textUp="π"
+													c:directionTextScale="0.5;0.5;0.5;0.33"
+													style="?cpp_digit_button_style"
+													a:onClick="digitButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_clear.xml b/android-app/res/layout/cpp_drag_button_clear.xml
index 6c88e667..7fb20322 100644
--- a/android-app/res/layout/cpp_drag_button_clear.xml
+++ b/android-app/res/layout/cpp_drag_button_clear.xml
@@ -1,18 +1,34 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <org.solovyev.android.calculator.view.NumeralBasesButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:id="@id/cpp_button_clear"
-	c:textUp="dec"
-	a:text="@string/c_clear"
-	c:textDown="bin"
-	c:textLeft="hex"
-	a:textStyle="bold"
-	style="?cpp_control_image_button_style"
-	a:onClick="clearButtonClickHandler" />
\ No newline at end of file
+														 xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+														 a:id="@id/cpp_button_clear"
+														 c:textUp="dec"
+														 a:text="@string/c_clear"
+														 c:textDown="bin"
+														 c:textLeft="hex"
+														 a:textStyle="bold"
+														 style="?cpp_control_image_button_style"
+														 a:onClick="clearButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_division.xml b/android-app/res/layout/cpp_drag_button_division.xml
index 1a90a3c9..365f8799 100644
--- a/android-app/res/layout/cpp_drag_button_division.xml
+++ b/android-app/res/layout/cpp_drag_button_division.xml
@@ -1,17 +1,33 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <org.solovyev.android.view.drag.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:id="@id/cpp_button_division"
-	c:textUp="%"
-	a:text="/"
-	c:textDown="√"
-	c:directionTextScale="0.5"
-	style="?cpp_operation_button_style"
-	a:onClick="digitButtonClickHandler" />
\ No newline at end of file
+													xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+													a:id="@id/cpp_button_division"
+													c:textUp="%"
+													a:text="/"
+													c:textDown="√"
+													c:directionTextScale="0.5"
+													style="?cpp_operation_button_style"
+													a:onClick="digitButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_dot.xml b/android-app/res/layout/cpp_drag_button_dot.xml
index ad595ee9..1489b6ee 100644
--- a/android-app/res/layout/cpp_drag_button_dot.xml
+++ b/android-app/res/layout/cpp_drag_button_dot.xml
@@ -1,16 +1,32 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <org.solovyev.android.view.drag.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:id="@id/cpp_button_period"
-	a:text="."
-	c:textUp=","
-	c:directionTextScale="0.5"
-	style="?cpp_digit_button_style"
-	a:onClick="digitButtonClickHandler" />
\ No newline at end of file
+													xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+													a:id="@id/cpp_button_period"
+													a:text="."
+													c:textUp=","
+													c:directionTextScale="0.5"
+													style="?cpp_digit_button_style"
+													a:onClick="digitButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_empty.xml b/android-app/res/layout/cpp_drag_button_empty.xml
index 7364a8fa..64157714 100644
--- a/android-app/res/layout/cpp_drag_button_empty.xml
+++ b/android-app/res/layout/cpp_drag_button_empty.xml
@@ -1,8 +1,24 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
-<org.solovyev.android.view.drag.DirectionDragButton style="?cpp_control_button_style" />
\ No newline at end of file
+<org.solovyev.android.view.drag.DirectionDragButton style="?cpp_control_button_style"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_equals.xml b/android-app/res/layout/cpp_drag_button_equals.xml
index 8a71b13b..649e14a3 100644
--- a/android-app/res/layout/cpp_drag_button_equals.xml
+++ b/android-app/res/layout/cpp_drag_button_equals.xml
@@ -1,18 +1,34 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 <org.solovyev.android.view.drag.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:id="@id/cpp_button_equals"
-	c:textUp="≡"
-	a:text="="
-	c:textDown="@string/cpp_plot_button_text"
-	c:directionTextScale="0.5;0.5;0.33;0.5"
-	a:layout_width="fill_parent"
-	a:layout_height="fill_parent"
-	style="?cpp_control_button_style"
-	a:onClick="equalsButtonClickHandler" />
\ No newline at end of file
+													xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+													a:id="@id/cpp_button_equals"
+													c:textUp="≡"
+													a:text="="
+													c:textDown="@string/cpp_plot_button_text"
+													c:directionTextScale="0.5;0.5;0.33;0.5"
+													a:layout_width="fill_parent"
+													a:layout_height="fill_parent"
+													style="?cpp_control_button_style"
+													a:onClick="equalsButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_functions.xml b/android-app/res/layout/cpp_drag_button_functions.xml
index 866ca30d..a1aa9a92 100644
--- a/android-app/res/layout/cpp_drag_button_functions.xml
+++ b/android-app/res/layout/cpp_drag_button_functions.xml
@@ -1,17 +1,33 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <org.solovyev.android.view.drag.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:id="@id/cpp_button_functions"
-	c:directionTextScale="0.5"
-	c:textUp="+ƒ"
-	a:text="ƒ(x)"
-	a:textStyle="italic"
-	a:onClick="functionsButtonClickHandler"
-	style="?cpp_control_button_style" />
\ No newline at end of file
+													xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+													a:id="@id/cpp_button_functions"
+													c:directionTextScale="0.5"
+													c:textUp="+ƒ"
+													a:text="ƒ(x)"
+													a:textStyle="italic"
+													a:onClick="functionsButtonClickHandler"
+													style="?cpp_control_button_style"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_history.xml b/android-app/res/layout/cpp_drag_button_history.xml
index da3b618f..43af5eac 100644
--- a/android-app/res/layout/cpp_drag_button_history.xml
+++ b/android-app/res/layout/cpp_drag_button_history.xml
@@ -1,17 +1,33 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 <org.solovyev.android.view.drag.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:id="@id/cpp_button_history"
-	a:text="@string/c_history_button"
-	c:textUp="@string/c_undo"
-	c:textDown="@string/c_redo"
-	c:directionTextScale="0.27"
-	style="?cpp_control_button_style"
-	a:textStyle="bold"
-	a:onClick="historyButtonClickHandler" />
\ No newline at end of file
+													xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+													a:id="@id/cpp_button_history"
+													a:text="@string/c_history_button"
+													c:textUp="@string/c_undo"
+													c:textDown="@string/c_redo"
+													c:directionTextScale="0.27"
+													style="?cpp_control_button_style"
+													a:textStyle="bold"
+													a:onClick="historyButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_left.xml b/android-app/res/layout/cpp_drag_button_left.xml
index b826cada..bfc36433 100644
--- a/android-app/res/layout/cpp_drag_button_left.xml
+++ b/android-app/res/layout/cpp_drag_button_left.xml
@@ -1,16 +1,32 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <org.solovyev.android.view.drag.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:id="@id/cpp_button_left"
-	c:textUp="◀◀"
-	a:text="◀"
-	c:directionTextScale="0.5"
-	style="?cpp_control_button_style"
-	a:onClick="digitButtonClickHandler" />
\ No newline at end of file
+													xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+													a:id="@id/cpp_button_left"
+													c:textUp="◀◀"
+													a:text="◀"
+													c:directionTextScale="0.5"
+													style="?cpp_control_button_style"
+													a:onClick="digitButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_multiplication.xml b/android-app/res/layout/cpp_drag_button_multiplication.xml
index 6a039212..1010ae9c 100644
--- a/android-app/res/layout/cpp_drag_button_multiplication.xml
+++ b/android-app/res/layout/cpp_drag_button_multiplication.xml
@@ -1,18 +1,34 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <org.solovyev.android.view.drag.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:id="@id/cpp_button_multiplication"
-	a:text="×"
-	c:textUp="^"
-	c:textDown="^2"
-	c:textLeft="Π"
-	style="?cpp_operation_button_style"
-	c:directionTextScale="0.5"
-	a:onClick="digitButtonClickHandler" />
\ No newline at end of file
+													xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+													a:id="@id/cpp_button_multiplication"
+													a:text="×"
+													c:textUp="^"
+													c:textDown="^2"
+													c:textLeft="Π"
+													style="?cpp_operation_button_style"
+													c:directionTextScale="0.5"
+													a:onClick="digitButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_operators.xml b/android-app/res/layout/cpp_drag_button_operators.xml
index c87d1ca0..3ed06c05 100644
--- a/android-app/res/layout/cpp_drag_button_operators.xml
+++ b/android-app/res/layout/cpp_drag_button_operators.xml
@@ -1,13 +1,29 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <org.solovyev.android.view.drag.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@id/cpp_button_operators"
-	a:text="∂,…"
-	a:onClick="operatorsButtonClickHandler"
-	style="?cpp_control_button_style" />
\ No newline at end of file
+													a:id="@id/cpp_button_operators"
+													a:text="∂,…"
+													a:onClick="operatorsButtonClickHandler"
+													style="?cpp_control_button_style"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_plus.xml b/android-app/res/layout/cpp_drag_button_plus.xml
index b8c03d41..9aa89e05 100644
--- a/android-app/res/layout/cpp_drag_button_plus.xml
+++ b/android-app/res/layout/cpp_drag_button_plus.xml
@@ -1,16 +1,32 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 <org.solovyev.android.view.drag.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:id="@id/cpp_button_plus"
-	c:directionTextScale="0.5"
-	c:textUp="°"
-	c:textDown="E"
-	a:text="+"
-	style="?cpp_operation_button_style"
-	a:onClick="digitButtonClickHandler" />
\ No newline at end of file
+													xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+													a:id="@id/cpp_button_plus"
+													c:directionTextScale="0.5"
+													c:textUp="°"
+													c:textDown="E"
+													a:text="+"
+													style="?cpp_operation_button_style"
+													a:onClick="digitButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_right.xml b/android-app/res/layout/cpp_drag_button_right.xml
index c0c896ad..5813e98f 100644
--- a/android-app/res/layout/cpp_drag_button_right.xml
+++ b/android-app/res/layout/cpp_drag_button_right.xml
@@ -1,16 +1,32 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <org.solovyev.android.view.drag.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:id="@id/cpp_button_right"
-	c:textUp="▶▶"
-	a:text="▶"
-	c:directionTextScale="0.5"
-	style="?cpp_control_button_style"
-	a:onClick="digitButtonClickHandler" />
\ No newline at end of file
+													xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+													a:id="@id/cpp_button_right"
+													c:textUp="▶▶"
+													a:text="▶"
+													c:directionTextScale="0.5"
+													style="?cpp_control_button_style"
+													a:onClick="digitButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_round_brackets.xml b/android-app/res/layout/cpp_drag_button_round_brackets.xml
index bfe5dae8..73b71a37 100644
--- a/android-app/res/layout/cpp_drag_button_round_brackets.xml
+++ b/android-app/res/layout/cpp_drag_button_round_brackets.xml
@@ -1,18 +1,34 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <org.solovyev.android.view.drag.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:id="@id/cpp_button_round_brackets"
-	c:textUp="("
-	a:text="(  )"
-	c:textDown=")"
-	c:textLeft="(…)"
-	c:directionTextScale="0.5;0.5;0.5;0.33"
-	style="?cpp_digit_button_style"
-	a:onClick="digitButtonClickHandler" />
\ No newline at end of file
+													xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+													a:id="@id/cpp_button_round_brackets"
+													c:textUp="("
+													a:text="(  )"
+													c:textDown=")"
+													c:textLeft="(…)"
+													c:directionTextScale="0.5;0.5;0.5;0.33"
+													style="?cpp_digit_button_style"
+													a:onClick="digitButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_subtraction.xml b/android-app/res/layout/cpp_drag_button_subtraction.xml
index 2c8ed7eb..a4080a9c 100644
--- a/android-app/res/layout/cpp_drag_button_subtraction.xml
+++ b/android-app/res/layout/cpp_drag_button_subtraction.xml
@@ -1,15 +1,31 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 <org.solovyev.android.view.drag.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:id="@id/cpp_button_subtraction"
-	c:textDown="∂,…"
-	a:text="-"
-	c:directionTextScale="0.5"
-	style="?cpp_operation_button_style"
-	a:onClick="digitButtonClickHandler" />
\ No newline at end of file
+													xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+													a:id="@id/cpp_button_subtraction"
+													c:textDown="∂,…"
+													a:text="-"
+													c:directionTextScale="0.5"
+													style="?cpp_operation_button_style"
+													a:onClick="digitButtonClickHandler"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_drag_button_vars.xml b/android-app/res/layout/cpp_drag_button_vars.xml
index 2139aba6..99f495f6 100644
--- a/android-app/res/layout/cpp_drag_button_vars.xml
+++ b/android-app/res/layout/cpp_drag_button_vars.xml
@@ -1,17 +1,33 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <org.solovyev.android.view.drag.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:id="@id/cpp_button_vars"
-	c:directionTextScale="0.5"
-	c:textUp="+π"
-	a:text="π,…"
-	a:textStyle="italic"
-	a:onClick="varsButtonClickHandler"
-	style="?cpp_control_button_style" />
\ No newline at end of file
+													xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+													a:id="@id/cpp_button_vars"
+													c:directionTextScale="0.5"
+													c:textUp="+π"
+													a:text="π,…"
+													a:textStyle="italic"
+													a:onClick="varsButtonClickHandler"
+													style="?cpp_control_button_style"/>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_plot_fragment.xml b/android-app/res/layout/cpp_plot_fragment.xml
index ffc90bc2..c91ab093 100644
--- a/android-app/res/layout/cpp_plot_fragment.xml
+++ b/android-app/res/layout/cpp_plot_fragment.xml
@@ -1,18 +1,40 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_fragment_layout"
-	style="?cpp_fragment_layout_style"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent">
+			  a:id="@+id/main_fragment_layout"
+			  style="?cpp_fragment_layout_style"
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent">
 
 	<TextView
-		a:id="@+id/fragment_title"
-		a:layout_height="wrap_content"
-		a:layout_width="match_parent"
-		style="?cpp_fragment_title_style" />
+			a:id="@+id/fragment_title"
+			a:layout_height="wrap_content"
+			a:layout_width="match_parent"
+			style="?cpp_fragment_title_style"/>
 
-	<include layout="@layout/ad" />
+	<include layout="@layout/ad"/>
 
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_plot_function_list_item.xml b/android-app/res/layout/cpp_plot_function_list_item.xml
index 090ffbc8..bfd1ce45 100644
--- a/android-app/res/layout/cpp_plot_function_list_item.xml
+++ b/android-app/res/layout/cpp_plot_function_list_item.xml
@@ -1,36 +1,58 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="wrap_content"
-	a:orientation="horizontal">
+			  a:layout_width="match_parent"
+			  a:layout_height="wrap_content"
+			  a:orientation="horizontal">
 
 	<TextView
-		a:id="@+id/cpp_plot_function_expression_textview"
-		a:layout_width="0dp"
-		a:layout_height="wrap_content"
-		a:layout_weight="3" />
+			a:id="@+id/cpp_plot_function_expression_textview"
+			a:layout_width="0dp"
+			a:layout_height="wrap_content"
+			a:layout_weight="3"/>
 
 	<CheckBox
-		a:id="@+id/cpp_plot_function_pinned_checkbox"
-		a:layout_width="0dp"
-		a:layout_height="wrap_content"
-		a:layout_weight="1" />
+			a:id="@+id/cpp_plot_function_pinned_checkbox"
+			a:layout_width="0dp"
+			a:layout_height="wrap_content"
+			a:layout_weight="1"/>
 
 	<CheckBox
-		a:id="@+id/cpp_plot_function_visible_checkbox"
-		a:layout_width="0dp"
-		a:layout_height="wrap_content"
-		a:layout_weight="1" />
+			a:id="@+id/cpp_plot_function_visible_checkbox"
+			a:layout_width="0dp"
+			a:layout_height="wrap_content"
+			a:layout_weight="1"/>
 
 	<ImageButton
-		a:id="@+id/cpp_plot_function_settings_button"
-		a:layout_width="0dp"
-		a:layout_height="wrap_content"
-		a:layout_weight="1"
-		a:paddingTop="0dp"
-		a:paddingBottom="0dp"
-		a:scaleType="centerInside"
-		a:src="@drawable/kb_settings" />
+			a:id="@+id/cpp_plot_function_settings_button"
+			a:layout_width="0dp"
+			a:layout_height="wrap_content"
+			a:layout_weight="1"
+			a:paddingTop="0dp"
+			a:paddingBottom="0dp"
+			a:scaleType="centerInside"
+			a:src="@drawable/kb_settings"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_plot_function_settings_dialog.xml b/android-app/res/layout/cpp_plot_function_settings_dialog.xml
index c7f5c9e7..74e99ffb 100644
--- a/android-app/res/layout/cpp_plot_function_settings_dialog.xml
+++ b/android-app/res/layout/cpp_plot_function_settings_dialog.xml
@@ -1,7 +1,29 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/dialog_layout"
-	style="?cpp_dialog_style">
+			  a:id="@+id/dialog_layout"
+			  style="?cpp_dialog_style">
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_plot_function_settings_fragment.xml b/android-app/res/layout/cpp_plot_function_settings_fragment.xml
index bb3472c0..952adffa 100644
--- a/android-app/res/layout/cpp_plot_function_settings_fragment.xml
+++ b/android-app/res/layout/cpp_plot_function_settings_fragment.xml
@@ -1,62 +1,84 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_fragment_layout"
-	style="?cpp_fragment_layout_style"
-	a:layout_width="wrap_content"
-	a:layout_gravity="center_horizontal"
-	a:layout_height="match_parent"
-	a:orientation="vertical">
+			  a:id="@+id/main_fragment_layout"
+			  style="?cpp_fragment_layout_style"
+			  a:layout_width="wrap_content"
+			  a:layout_gravity="center_horizontal"
+			  a:layout_height="match_parent"
+			  a:orientation="vertical">
 
-	<include layout="@layout/ad" />
+	<include layout="@layout/ad"/>
 
 	<TextView
-		a:text="@string/cpp_plot_function_line_color_type"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content" />
+			a:text="@string/cpp_plot_function_line_color_type"
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content"/>
 
 	<Spinner
-		a:id="@+id/cpp_plot_function_line_color_type_spinner"
-		a:entries="@array/cpp_plot_line_color_type_names"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content" />
+			a:id="@+id/cpp_plot_function_line_color_type_spinner"
+			a:entries="@array/cpp_plot_line_color_type_names"
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content"/>
 
 	<TextView
-		a:text="@string/cpp_plot_function_line_color"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content" />
+			a:text="@string/cpp_plot_function_line_color"
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content"/>
 
 	<Spinner
-		a:id="@+id/cpp_plot_function_line_color_spinner"
-		a:entries="@array/cpp_plot_line_color_names"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content" />
+			a:id="@+id/cpp_plot_function_line_color_spinner"
+			a:entries="@array/cpp_plot_line_color_names"
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content"/>
 
 	<TextView
-		a:text="@string/cpp_plot_function_line_style"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content" />
+			a:text="@string/cpp_plot_function_line_style"
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content"/>
 
 	<Spinner
-		a:id="@+id/cpp_plot_function_line_style_spinner"
-		a:entries="@array/cpp_plot_line_style_names"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content" />
+			a:id="@+id/cpp_plot_function_line_style_spinner"
+			a:entries="@array/cpp_plot_line_style_names"
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content"/>
 
 	<TextView
-		a:text="@string/cpp_plot_function_line_width"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content" />
+			a:text="@string/cpp_plot_function_line_width"
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content"/>
 
 	<SeekBar
-		a:id="@+id/cpp_plot_functions_line_width_seekbar"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content" />
+			a:id="@+id/cpp_plot_functions_line_width_seekbar"
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content"/>
 
 	<Button
-		a:id="@+id/cpp_apply_button"
-		a:text="@string/cpp_apply"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content" />
+			a:id="@+id/cpp_apply_button"
+			a:text="@string/cpp_apply"
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_plot_functions_fragment.xml b/android-app/res/layout/cpp_plot_functions_fragment.xml
index 7f55e848..094c3150 100644
--- a/android-app/res/layout/cpp_plot_functions_fragment.xml
+++ b/android-app/res/layout/cpp_plot_functions_fragment.xml
@@ -1,43 +1,65 @@
 <?xml version="1.0" encoding="utf-8"?>
 
-<LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_fragment_layout"
-	style="?cpp_fragment_layout_style"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent">
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
 
-	<include layout="@layout/ad" />
+<LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
+			  a:id="@+id/main_fragment_layout"
+			  style="?cpp_fragment_layout_style"
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent">
+
+	<include layout="@layout/ad"/>
 
 	<LinearLayout
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:orientation="horizontal">
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content"
+			a:orientation="horizontal">
 
 		<TextView
-			a:layout_width="0dp"
-			a:layout_height="wrap_content"
-			a:layout_weight="3"
-			a:text="@string/cpp_function" />
+				a:layout_width="0dp"
+				a:layout_height="wrap_content"
+				a:layout_weight="3"
+				a:text="@string/cpp_function"/>
 
 		<TextView
-			a:layout_width="0dp"
-			a:layout_height="wrap_content"
-			a:layout_weight="1"
-			a:text="@string/cpp_pinned" />
+				a:layout_width="0dp"
+				a:layout_height="wrap_content"
+				a:layout_weight="1"
+				a:text="@string/cpp_pinned"/>
 
 		<TextView
-			a:layout_width="0dp"
-			a:layout_height="wrap_content"
-			a:layout_weight="1"
-			a:text="@string/cpp_visible" />
+				a:layout_width="0dp"
+				a:layout_height="wrap_content"
+				a:layout_weight="1"
+				a:text="@string/cpp_visible"/>
 
 		<TextView
-			a:layout_width="0dp"
-			a:layout_height="wrap_content"
-			a:layout_weight="1" />
+				a:layout_width="0dp"
+				a:layout_height="wrap_content"
+				a:layout_weight="1"/>
 
 	</LinearLayout>
 
-	<ListView style="?cpp_fragment_list_view_style" />
+	<ListView style="?cpp_fragment_list_view_style"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_plot_range_fragment.xml b/android-app/res/layout/cpp_plot_range_fragment.xml
index ee68d096..e407446e 100644
--- a/android-app/res/layout/cpp_plot_range_fragment.xml
+++ b/android-app/res/layout/cpp_plot_range_fragment.xml
@@ -1,109 +1,131 @@
 <?xml version="1.0" encoding="utf-8"?>
 
-<LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_fragment_layout"
-	style="?cpp_fragment_layout_style"
-	a:layout_width="match_parent"
-	a:layout_gravity="center_horizontal"
-	a:layout_height="match_parent"
-	a:orientation="vertical">
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
 
-	<include layout="@layout/ad" />
+<LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
+			  a:id="@+id/main_fragment_layout"
+			  style="?cpp_fragment_layout_style"
+			  a:layout_width="match_parent"
+			  a:layout_gravity="center_horizontal"
+			  a:layout_height="match_parent"
+			  a:orientation="vertical">
+
+	<include layout="@layout/ad"/>
 
 	<LinearLayout
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:orientation="horizontal"
-		a:baselineAligned="false">
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content"
+			a:orientation="horizontal"
+			a:baselineAligned="false">
 
 		<LinearLayout
-			a:layout_width="0dp"
-			a:layout_height="wrap_content"
-			a:layout_weight="1"
-			a:orientation="vertical">
+				a:layout_width="0dp"
+				a:layout_height="wrap_content"
+				a:layout_weight="1"
+				a:orientation="vertical">
 
 			<TextView
-				a:text="@string/cpp_plot_range_x_min"
-				a:layout_width="match_parent"
-				a:layout_height="wrap_content" />
+					a:text="@string/cpp_plot_range_x_min"
+					a:layout_width="match_parent"
+					a:layout_height="wrap_content"/>
 
 			<EditText
-				a:id="@+id/cpp_plot_range_x_min_editext"
-				a:inputType="numberDecimal|numberSigned"
-				a:layout_width="match_parent"
-				a:layout_height="wrap_content" />
+					a:id="@+id/cpp_plot_range_x_min_editext"
+					a:inputType="numberDecimal|numberSigned"
+					a:layout_width="match_parent"
+					a:layout_height="wrap_content"/>
 		</LinearLayout>
 
 		<LinearLayout
-			a:layout_width="0dp"
-			a:layout_height="wrap_content"
-			a:layout_weight="1"
-			a:orientation="vertical">
+				a:layout_width="0dp"
+				a:layout_height="wrap_content"
+				a:layout_weight="1"
+				a:orientation="vertical">
 
 			<TextView
-				a:text="@string/cpp_plot_range_x_max"
-				a:layout_width="match_parent"
-				a:layout_height="wrap_content" />
+					a:text="@string/cpp_plot_range_x_max"
+					a:layout_width="match_parent"
+					a:layout_height="wrap_content"/>
 
 			<EditText
-				a:id="@+id/cpp_plot_range_x_max_editext"
-				a:inputType="numberDecimal|numberSigned"
-				a:layout_width="match_parent"
-				a:layout_height="wrap_content" />
+					a:id="@+id/cpp_plot_range_x_max_editext"
+					a:inputType="numberDecimal|numberSigned"
+					a:layout_width="match_parent"
+					a:layout_height="wrap_content"/>
 		</LinearLayout>
 
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:orientation="horizontal"
-		a:baselineAligned="false">
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content"
+			a:orientation="horizontal"
+			a:baselineAligned="false">
 
 		<LinearLayout
-			a:layout_width="0dp"
-			a:layout_height="wrap_content"
-			a:layout_weight="1"
-			a:orientation="vertical">
+				a:layout_width="0dp"
+				a:layout_height="wrap_content"
+				a:layout_weight="1"
+				a:orientation="vertical">
 
 			<TextView
-				a:text="@string/cpp_plot_range_y_min"
-				a:layout_width="match_parent"
-				a:layout_height="wrap_content" />
+					a:text="@string/cpp_plot_range_y_min"
+					a:layout_width="match_parent"
+					a:layout_height="wrap_content"/>
 
 			<EditText
-				a:id="@+id/cpp_plot_range_y_min_editext"
-				a:inputType="numberDecimal|numberSigned"
-				a:layout_width="match_parent"
-				a:layout_height="wrap_content" />
+					a:id="@+id/cpp_plot_range_y_min_editext"
+					a:inputType="numberDecimal|numberSigned"
+					a:layout_width="match_parent"
+					a:layout_height="wrap_content"/>
 		</LinearLayout>
 
 		<LinearLayout
-			a:layout_width="0dp"
-			a:layout_height="wrap_content"
-			a:layout_weight="1"
-			a:orientation="vertical">
+				a:layout_width="0dp"
+				a:layout_height="wrap_content"
+				a:layout_weight="1"
+				a:orientation="vertical">
 
 			<TextView
-				a:text="@string/cpp_plot_range_y_max"
-				a:layout_width="match_parent"
-				a:layout_height="wrap_content" />
+					a:text="@string/cpp_plot_range_y_max"
+					a:layout_width="match_parent"
+					a:layout_height="wrap_content"/>
 
 			<EditText
-				a:id="@+id/cpp_plot_range_y_max_editext"
-				a:inputType="numberDecimal|numberSigned"
-				a:layout_width="match_parent"
-				a:layout_height="wrap_content" />
+					a:id="@+id/cpp_plot_range_y_max_editext"
+					a:inputType="numberDecimal|numberSigned"
+					a:layout_width="match_parent"
+					a:layout_height="wrap_content"/>
 		</LinearLayout>
 
 
 	</LinearLayout>
 
 	<Button
-		a:id="@+id/cpp_apply_button"
-		a:text="@string/cpp_apply"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content" />
+			a:id="@+id/cpp_apply_button"
+			a:text="@string/cpp_apply"
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_purchase_dialog_fragment.xml b/android-app/res/layout/cpp_purchase_dialog_fragment.xml
index a18a6b13..877f5574 100644
--- a/android-app/res/layout/cpp_purchase_dialog_fragment.xml
+++ b/android-app/res/layout/cpp_purchase_dialog_fragment.xml
@@ -1,25 +1,47 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_fragment_layout"
-	style="?cpp_fragment_layout_style"
-	a:layout_width="match_parent"
-	a:layout_gravity="center_horizontal"
-	a:layout_height="match_parent"
-	a:orientation="vertical">
+			  a:id="@+id/main_fragment_layout"
+			  style="?cpp_fragment_layout_style"
+			  a:layout_width="match_parent"
+			  a:layout_gravity="center_horizontal"
+			  a:layout_height="match_parent"
+			  a:orientation="vertical">
 
 	<TextView
-		a:id="@+id/cpp_purchase_text"
-		a:text="@string/cpp_purchase_text"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:maxLines="10"
-		a:scrollbars="vertical" />
+			a:id="@+id/cpp_purchase_text"
+			a:text="@string/cpp_purchase_text"
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content"
+			a:maxLines="10"
+			a:scrollbars="vertical"/>
 
 	<Button
-		a:id="@+id/cpp_continue_button"
-		a:text="@string/cpp_continue"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content" />
+			a:id="@+id/cpp_continue_button"
+			a:text="@string/cpp_continue"
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_wiki_page.xml b/android-app/res/layout/cpp_wiki_page.xml
index 384fe140..541bb53f 100644
--- a/android-app/res/layout/cpp_wiki_page.xml
+++ b/android-app/res/layout/cpp_wiki_page.xml
@@ -1,12 +1,34 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:orientation="vertical"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent">
+			  a:orientation="vertical"
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent">
 
 	<WebView a:id="@+id/cpp_wiki_webview"
-		a:layout_width="match_parent"
-		a:layout_height="match_parent"/>
+			 a:layout_width="match_parent"
+			 a:layout_height="match_parent"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout/cpp_wizard.xml b/android-app/res/layout/cpp_wizard.xml
index 993a5629..ac3106fb 100644
--- a/android-app/res/layout/cpp_wizard.xml
+++ b/android-app/res/layout/cpp_wizard.xml
@@ -1,45 +1,67 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/wizard_layout"
-	style="?cpp_dialog_style"
-	a:orientation="vertical">
+			  a:id="@+id/wizard_layout"
+			  style="?cpp_dialog_style"
+			  a:orientation="vertical">
 
 	<FrameLayout
-		a:orientation="vertical"
-		a:id="@+id/wizard_content"
-		a:layout_width="match_parent"
-		a:layout_height="0dp"
-		a:layout_weight="1"
-		a:padding="6dp"
-		a:gravity="center"/>
+			a:orientation="vertical"
+			a:id="@+id/wizard_content"
+			a:layout_width="match_parent"
+			a:layout_height="0dp"
+			a:layout_weight="1"
+			a:padding="6dp"
+			a:gravity="center"/>
 
 	<LinearLayout
-		a:orientation="horizontal"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content">
+			a:orientation="horizontal"
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content">
 
 		<Button
-			a:id="@+id/wizard_prev_button"
-			a:layout_height="wrap_content"
-			a:layout_width="0dp"
-			a:layout_weight="1"
-			a:text="Prev"/>
+				a:id="@+id/wizard_prev_button"
+				a:layout_height="wrap_content"
+				a:layout_width="0dp"
+				a:layout_weight="1"
+				a:text="Prev"/>
 
 		<Button
-			a:id="@+id/wizard_next_button"
-			a:layout_height="wrap_content"
-			a:layout_width="0dp"
-			a:layout_weight="1"
-			a:text="Next"/>
+				a:id="@+id/wizard_next_button"
+				a:layout_height="wrap_content"
+				a:layout_width="0dp"
+				a:layout_weight="1"
+				a:text="Next"/>
 
 		<Button
-			a:id="@+id/wizard_finish_button"
-			a:layout_height="wrap_content"
-			a:layout_width="0dp"
-			a:layout_weight="1"
-			a:visibility="gone"
-			a:text="Finish"/>
+				a:id="@+id/wizard_finish_button"
+				a:layout_height="wrap_content"
+				a:layout_width="0dp"
+				a:layout_weight="1"
+				a:visibility="gone"
+				a:text="Finish"/>
 
 	</LinearLayout>
 
diff --git a/android-app/res/layout/cpp_wizard_step_choose_layout.xml b/android-app/res/layout/cpp_wizard_step_choose_layout.xml
index 43d38bec..2a20e35d 100644
--- a/android-app/res/layout/cpp_wizard_step_choose_layout.xml
+++ b/android-app/res/layout/cpp_wizard_step_choose_layout.xml
@@ -1,52 +1,74 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:orientation="vertical">
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent"
+			  a:orientation="vertical">
 
 	<RadioGroup
-		a:orientation="horizontal"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:gravity="center_vertical|top">
+			a:orientation="horizontal"
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content"
+			a:gravity="center_vertical|top">
 
 		<RadioButton
-			a:layout_width="0dp"
-			a:id="@+id/wizard_optimized_radiobutton"
-			a:layout_weight="1"
-			a:text="@string/cpp_wizard_layout_optimized"
-			a:layout_height="wrap_content" />
+				a:layout_width="0dp"
+				a:id="@+id/wizard_optimized_radiobutton"
+				a:layout_weight="1"
+				a:text="@string/cpp_wizard_layout_optimized"
+				a:layout_height="wrap_content"/>
 
 		<RadioButton
-			a:layout_width="0dp"
-			a:id="@+id/wizard_big_buttons_radiobutton"
-			a:layout_weight="1"
-			a:text="@string/cpp_wizard_layout_big_buttons"
-			a:layout_height="wrap_content" />
+				a:layout_width="0dp"
+				a:id="@+id/wizard_big_buttons_radiobutton"
+				a:layout_weight="1"
+				a:text="@string/cpp_wizard_layout_big_buttons"
+				a:layout_height="wrap_content"/>
 
 	</RadioGroup>
 
 	<LinearLayout
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:orientation="horizontal">
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content"
+			a:orientation="horizontal">
 
 		<ImageView
-			a:layout_width="0dp"
-			a:layout_weight="1"
-			a:scaleType="centerInside"
-			a:layout_height="match_parent"
-			a:padding="10dp"
-			a:src="@drawable/tablet_optimized" />
+				a:layout_width="0dp"
+				a:layout_weight="1"
+				a:scaleType="centerInside"
+				a:layout_height="match_parent"
+				a:padding="10dp"
+				a:src="@drawable/tablet_optimized"/>
 
 		<ImageView
-			a:layout_width="0dp"
-			a:layout_weight="1"
-			a:scaleType="centerInside"
-			a:layout_height="match_parent"
-			a:padding="10dp"
-			a:src="@drawable/tablet_big_buttons" />
+				a:layout_width="0dp"
+				a:layout_weight="1"
+				a:scaleType="centerInside"
+				a:layout_height="match_parent"
+				a:padding="10dp"
+				a:src="@drawable/tablet_big_buttons"/>
 
 	</LinearLayout>
 
diff --git a/android-app/res/layout/cpp_wizard_step_choose_mode.xml b/android-app/res/layout/cpp_wizard_step_choose_mode.xml
index a66dbf72..61364865 100644
--- a/android-app/res/layout/cpp_wizard_step_choose_mode.xml
+++ b/android-app/res/layout/cpp_wizard_step_choose_mode.xml
@@ -1,5 +1,27 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
 			  a:layout_width="wrap_content"
 			  a:layout_height="match_parent"
diff --git a/android-app/res/layout/cpp_wizard_step_drag_button.xml b/android-app/res/layout/cpp_wizard_step_drag_button.xml
index 104a7741..aef74a78 100644
--- a/android-app/res/layout/cpp_wizard_step_drag_button.xml
+++ b/android-app/res/layout/cpp_wizard_step_drag_button.xml
@@ -1,37 +1,59 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:orientation="vertical">
+			  xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent"
+			  a:orientation="vertical">
 
 	<TextView
 			a:text="Drag button is an exclusive feature of Calculator++ which provides fast access to the secondary functions"
 			a:layout_height="wrap_content"
-			a:layout_width="match_parent" />
+			a:layout_width="match_parent"/>
 
 	<TextView
 			a:id="@+id/wizard_dragbutton_action_textview"
-		    a:layout_marginTop="10dp"
-		    a:textStyle="bold"
+			a:layout_marginTop="10dp"
+			a:textStyle="bold"
 			a:text="@string/cpp_wizard_dragbutton_action_center"
 			a:layout_height="wrap_content"
-			a:layout_width="match_parent" />
+			a:layout_width="match_parent"/>
 
 	<org.solovyev.android.view.drag.DirectionDragButton
-		a:layout_margin="30dp"
-		a:layout_height="100dp"
-		a:layout_width="100dp"
-		a:minWidth="100dp"
-		a:minHeight="100dp"
-		a:layout_gravity="center"
-		a:id="@+id/wizard_dragbutton"
-		a:text="9"
-		c:textDown="^2"
-		c:textLeft="sin"
-		c:textUp="%"
-		c:directionTextScale="0.5;0.5;0.5;0.33"
-		style="?cpp_operation_button_style"/>
+			a:layout_margin="30dp"
+			a:layout_height="100dp"
+			a:layout_width="100dp"
+			a:minWidth="100dp"
+			a:minHeight="100dp"
+			a:layout_gravity="center"
+			a:id="@+id/wizard_dragbutton"
+			a:text="9"
+			c:textDown="^2"
+			c:textLeft="sin"
+			c:textUp="%"
+			c:directionTextScale="0.5;0.5;0.5;0.33"
+			style="?cpp_operation_button_style"/>
 
 </LinearLayout>
diff --git a/android-app/res/layout/cpp_wizard_step_onscreen.xml b/android-app/res/layout/cpp_wizard_step_onscreen.xml
index 85933dcd..cb7ee2d1 100644
--- a/android-app/res/layout/cpp_wizard_step_onscreen.xml
+++ b/android-app/res/layout/cpp_wizard_step_onscreen.xml
@@ -1,19 +1,41 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:orientation="vertical">
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent"
+			  a:orientation="vertical">
 
 	<TextView
 			a:text="Calculator in separate window allows you to do calculations while using other apps on your device"
 			a:layout_height="wrap_content"
-			a:layout_width="match_parent" />
+			a:layout_width="match_parent"/>
 
 	<CheckBox
-		a:id="@+id/wizard_onscreen_app_enabled_checkbox"
-		a:layout_height="wrap_content"
-		a:layout_width="match_parent"
-		a:text="Enable calculator in separate window (second icon will appear in the apps list)"/>
+			a:id="@+id/wizard_onscreen_app_enabled_checkbox"
+			a:layout_height="wrap_content"
+			a:layout_width="match_parent"
+			a:text="Enable calculator in separate window (second icon will appear in the apps list)"/>
 
 </LinearLayout>
diff --git a/android-app/res/layout/cpp_wizard_step_welcome.xml b/android-app/res/layout/cpp_wizard_step_welcome.xml
index 0f4c55dc..be126b5b 100644
--- a/android-app/res/layout/cpp_wizard_step_welcome.xml
+++ b/android-app/res/layout/cpp_wizard_step_welcome.xml
@@ -1,8 +1,30 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <TextView
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:text="@string/c_first_start_text"
-	/>
+		xmlns:a="http://schemas.android.com/apk/res/android"
+		a:layout_width="match_parent"
+		a:layout_height="match_parent"
+		a:text="@string/c_first_start_text"
+		/>
diff --git a/android-app/res/layout/display_error_message.xml b/android-app/res/layout/display_error_message.xml
index 63bb9b73..ad6ad982 100644
--- a/android-app/res/layout/display_error_message.xml
+++ b/android-app/res/layout/display_error_message.xml
@@ -1,28 +1,44 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <ScrollView xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="fill_parent"
-	a:layout_height="fill_parent">
+			a:layout_width="fill_parent"
+			a:layout_height="fill_parent">
 
 	<LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-		a:orientation="vertical"
-		a:layout_width="fill_parent"
-		a:layout_height="fill_parent"
-		a:scrollbars="vertical"
-		a:scrollbarAlwaysDrawVerticalTrack="true">
+				  a:orientation="vertical"
+				  a:layout_width="fill_parent"
+				  a:layout_height="fill_parent"
+				  a:scrollbars="vertical"
+				  a:scrollbarAlwaysDrawVerticalTrack="true">
 
 		<TextView xmlns:a="http://schemas.android.com/apk/res/android"
-			a:id="@+id/error_message_text_view"
-			a:layout_height="fill_parent"
-			a:layout_width="wrap_content"
-			a:padding="6dp"
-			style="@style/cpp_default_text_size" />
+				  a:id="@+id/error_message_text_view"
+				  a:layout_height="fill_parent"
+				  a:layout_width="wrap_content"
+				  a:padding="6dp"
+				  style="@style/cpp_default_text_size"/>
 
 	</LinearLayout>
 
diff --git a/android-app/res/layout/drag_button_calibration.xml b/android-app/res/layout/drag_button_calibration.xml
index 4528f83e..97613ab0 100644
--- a/android-app/res/layout/drag_button_calibration.xml
+++ b/android-app/res/layout/drag_button_calibration.xml
@@ -1,61 +1,83 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-	a:orientation="vertical"
-	a:layout_width="fill_parent"
-	a:layout_height="fill_parent"
-	a:background="#ff000000">
+			  xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
+			  a:orientation="vertical"
+			  a:layout_width="fill_parent"
+			  a:layout_height="fill_parent"
+			  a:background="#ff000000">
 
 	<LinearLayout
-		a:id="@+id/simplePad"
-		a:layout_width="fill_parent"
-		a:layout_height="fill_parent"
-		a:orientation="vertical"
-		a:layout_gravity="center">
+			a:id="@+id/simplePad"
+			a:layout_width="fill_parent"
+			a:layout_height="fill_parent"
+			a:orientation="vertical"
+			a:layout_gravity="center">
 
 		<LinearLayout
-			a:layout_weight="1"
-			a:layout_width="fill_parent"
-			a:layout_height="0dp">
+				a:layout_weight="1"
+				a:layout_width="fill_parent"
+				a:layout_height="0dp">
 
 			<ImageView
-				a:id="@+id/calibrationArrowLeft"
-				a:layout_gravity="left"
-				a:layout_width="80dp"
-				a:layout_height="80dp" />
+					a:id="@+id/calibrationArrowLeft"
+					a:layout_gravity="left"
+					a:layout_width="80dp"
+					a:layout_height="80dp"/>
 
 			<org.solovyev.android.view.drag.DirectionDragButton
-				a:id="@+id/calibrationButtonLeft"
-				a:text=""
-				c:textUp="@string/c_up"
-				c:textDown="@string/c_down"
-				a:layout_width="80dp"
-				a:layout_height="80dp"
-				style="?cpp_digit_button_style" />
+					a:id="@+id/calibrationButtonLeft"
+					a:text=""
+					c:textUp="@string/c_up"
+					c:textDown="@string/c_down"
+					a:layout_width="80dp"
+					a:layout_height="80dp"
+					style="?cpp_digit_button_style"/>
 
 			<org.solovyev.android.view.drag.DirectionDragButton
-				a:id="@+id/calibrationButtonRight"
-				a:text=""
-				c:textUp="@string/c_up"
-				c:textDown="@string/c_down"
-				a:layout_width="80dp"
-				a:layout_height="80dp"
-				style="?cpp_digit_button_style" />
+					a:id="@+id/calibrationButtonRight"
+					a:text=""
+					c:textUp="@string/c_up"
+					c:textDown="@string/c_down"
+					a:layout_width="80dp"
+					a:layout_height="80dp"
+					style="?cpp_digit_button_style"/>
 
 			<ImageView
-				a:id="@+id/calibrationArrowRight"
-				a:layout_gravity="right"
-				a:layout_width="80dp"
-				a:layout_height="80dp" />
+					a:id="@+id/calibrationArrowRight"
+					a:layout_gravity="right"
+					a:layout_width="80dp"
+					a:layout_height="80dp"/>
 		</LinearLayout>
 	</LinearLayout>
 
 	<Button
-		a:id="@+id/calibrationStart"
-		a:text="@string/c_restart"
-		a:layout_width="wrap_content"
-		a:layout_height="wrap_content"
-		a:onClick="restartClickHandler"
-		a:layout_gravity="bottom" />
+			a:id="@+id/calibrationStart"
+			a:text="@string/c_restart"
+			a:layout_width="wrap_content"
+			a:layout_height="wrap_content"
+			a:onClick="restartClickHandler"
+			a:layout_gravity="bottom"/>
 </LinearLayout>
diff --git a/android-app/res/layout/feedback.xml b/android-app/res/layout/feedback.xml
index 1fb1055e..36dd965a 100644
--- a/android-app/res/layout/feedback.xml
+++ b/android-app/res/layout/feedback.xml
@@ -1,20 +1,36 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="fill_parent"
-	a:layout_height="fill_parent">
+			  a:layout_width="fill_parent"
+			  a:layout_height="fill_parent">
 
 	<TextView
-		a:id="@+id/feedbackText"
-		style="@style/cpp_about_style"
-		a:layout_width="fill_parent"
-		a:text="@string/c_feedback_text"
-		a:layout_height="fill_parent" />
+			a:id="@+id/feedbackText"
+			style="@style/cpp_about_style"
+			a:layout_width="fill_parent"
+			a:text="@string/c_feedback_text"
+			a:layout_height="fill_parent"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout/function_add_param.xml b/android-app/res/layout/function_add_param.xml
index dab6661f..876674af 100644
--- a/android-app/res/layout/function_add_param.xml
+++ b/android-app/res/layout/function_add_param.xml
@@ -1,20 +1,42 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_height="wrap_content"
-	a:layout_width="match_parent"
-	a:orientation="horizontal">
+			  a:layout_height="wrap_content"
+			  a:layout_width="match_parent"
+			  a:orientation="horizontal">
 
 	<Button
-		a:id="@+id/function_add_param_button"
-		a:layout_height="wrap_content"
-		a:layout_width="0dp"
-		a:layout_weight="1"
-		a:text="+" />
+			a:id="@+id/function_add_param_button"
+			a:layout_height="wrap_content"
+			a:layout_width="0dp"
+			a:layout_weight="1"
+			a:text="+"/>
 
 	<TextView
-		a:layout_height="wrap_content"
-		a:layout_width="0dp"
-		a:layout_weight="5" />
+			a:layout_height="wrap_content"
+			a:layout_width="0dp"
+			a:layout_weight="5"/>
 
 </LinearLayout>
diff --git a/android-app/res/layout/function_edit.xml b/android-app/res/layout/function_edit.xml
index 6cce81dc..f4cfe3a2 100644
--- a/android-app/res/layout/function_edit.xml
+++ b/android-app/res/layout/function_edit.xml
@@ -1,99 +1,115 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <ScrollView xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_height="wrap_content"
-	a:layout_width="match_parent"
-	a:minWidth="300dp">
+			a:layout_height="wrap_content"
+			a:layout_width="match_parent"
+			a:minWidth="300dp">
 
 	<LinearLayout
-		a:layout_height="wrap_content"
-		a:layout_width="match_parent"
-		a:orientation="vertical">
-
-		<TextView
 			a:layout_height="wrap_content"
 			a:layout_width="match_parent"
-			a:padding="6dp"
-			style="@style/cpp_default_text_size"
-			a:text="@string/c_function_name" />
+			a:orientation="vertical">
+
+		<TextView
+				a:layout_height="wrap_content"
+				a:layout_width="match_parent"
+				a:padding="6dp"
+				style="@style/cpp_default_text_size"
+				a:text="@string/c_function_name"/>
 
 		<EditText
-			a:id="@+id/function_edit_name"
-			a:layout_height="wrap_content"
-			a:layout_width="match_parent"
-			style="@style/cpp_default_text_size"
-			a:inputType="text" />
+				a:id="@+id/function_edit_name"
+				a:layout_height="wrap_content"
+				a:layout_width="match_parent"
+				style="@style/cpp_default_text_size"
+				a:inputType="text"/>
 
 		<TextView
-			a:layout_height="wrap_content"
-			a:layout_width="match_parent"
-			a:padding="6dp"
-			style="@style/cpp_default_text_size"
-			a:text="@string/c_function_parameters" />
+				a:layout_height="wrap_content"
+				a:layout_width="match_parent"
+				a:padding="6dp"
+				style="@style/cpp_default_text_size"
+				a:text="@string/c_function_parameters"/>
 
 		<org.solovyev.android.calculator.function.FunctionParamsView
-			a:id="@+id/function_params_layout"
-			a:layout_height="wrap_content"
-			a:layout_width="match_parent" />
+				a:id="@+id/function_params_layout"
+				a:layout_height="wrap_content"
+				a:layout_width="match_parent"/>
 
 		<TextView
-			a:layout_height="wrap_content"
-			a:layout_width="match_parent"
-			style="@style/cpp_default_text_size"
-			a:padding="6dp"
-			a:text="@string/c_function_value" />
+				a:layout_height="wrap_content"
+				a:layout_width="match_parent"
+				style="@style/cpp_default_text_size"
+				a:padding="6dp"
+				a:text="@string/c_function_value"/>
 
 		<EditText
-			a:id="@+id/function_edit_value"
-			a:layout_height="wrap_content"
-			a:layout_width="match_parent"
-			style="@style/cpp_default_text_size"
-			a:inputType="text" />
+				a:id="@+id/function_edit_value"
+				a:layout_height="wrap_content"
+				a:layout_width="match_parent"
+				style="@style/cpp_default_text_size"
+				a:inputType="text"/>
 
 		<TextView
-			a:layout_height="wrap_content"
-			a:layout_width="match_parent"
-			a:padding="6dp"
-			style="@style/cpp_default_text_size"
-			a:text="@string/c_function_description" />
+				a:layout_height="wrap_content"
+				a:layout_width="match_parent"
+				a:padding="6dp"
+				style="@style/cpp_default_text_size"
+				a:text="@string/c_function_description"/>
 
 		<EditText
-			a:id="@+id/function_edit_description"
-			a:layout_height="wrap_content"
-			a:layout_width="match_parent"
-			style="@style/cpp_default_text_size"
-			a:inputType="text" />
+				a:id="@+id/function_edit_description"
+				a:layout_height="wrap_content"
+				a:layout_width="match_parent"
+				style="@style/cpp_default_text_size"
+				a:inputType="text"/>
 
 		<LinearLayout
-			a:layout_height="wrap_content"
-			a:layout_width="match_parent">
+				a:layout_height="wrap_content"
+				a:layout_width="match_parent">
 
 			<Button
-				a:id="@+id/cancel_button"
-				a:layout_height="wrap_content"
-				a:layout_width="0dp"
-				a:layout_weight="1"
-				a:text="@string/c_cancel" />
+					a:id="@+id/cancel_button"
+					a:layout_height="wrap_content"
+					a:layout_width="0dp"
+					a:layout_weight="1"
+					a:text="@string/c_cancel"/>
 
 			<Button
-				a:id="@+id/remove_button"
-				a:layout_height="wrap_content"
-				a:layout_width="0dp"
-				a:layout_weight="1"
-				a:text="@string/c_remove" />
+					a:id="@+id/remove_button"
+					a:layout_height="wrap_content"
+					a:layout_width="0dp"
+					a:layout_weight="1"
+					a:text="@string/c_remove"/>
 
 			<Button
-				a:id="@+id/save_button"
-				a:layout_height="wrap_content"
-				a:layout_width="0dp"
-				a:layout_weight="1"
-				a:text="@string/c_save" />
+					a:id="@+id/save_button"
+					a:layout_height="wrap_content"
+					a:layout_width="0dp"
+					a:layout_weight="1"
+					a:text="@string/c_save"/>
 
 		</LinearLayout>
 
diff --git a/android-app/res/layout/function_edit_param.xml b/android-app/res/layout/function_edit_param.xml
index 28f079df..881ba176 100644
--- a/android-app/res/layout/function_edit_param.xml
+++ b/android-app/res/layout/function_edit_param.xml
@@ -1,37 +1,59 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_height="wrap_content"
-	a:layout_width="match_parent"
-	a:orientation="horizontal">
+			  a:layout_height="wrap_content"
+			  a:layout_width="match_parent"
+			  a:orientation="horizontal">
 
 	<Button
-		a:id="@+id/function_remove_param_button"
-		a:layout_height="wrap_content"
-		a:layout_width="0dp"
-		a:layout_weight="1"
-		a:text="-" />
+			a:id="@+id/function_remove_param_button"
+			a:layout_height="wrap_content"
+			a:layout_width="0dp"
+			a:layout_weight="1"
+			a:text="-"/>
 
 	<Button
-		a:id="@+id/function_up_param_button"
-		a:layout_height="wrap_content"
-		a:layout_width="0dp"
-		a:layout_weight="1"
-		a:text="↑" />
+			a:id="@+id/function_up_param_button"
+			a:layout_height="wrap_content"
+			a:layout_width="0dp"
+			a:layout_weight="1"
+			a:text="↑"/>
 
 	<Button
-		a:id="@+id/function_down_param_button"
-		a:layout_height="wrap_content"
-		a:layout_width="0dp"
-		a:layout_weight="1"
-		a:text="↓" />
+			a:id="@+id/function_down_param_button"
+			a:layout_height="wrap_content"
+			a:layout_width="0dp"
+			a:layout_weight="1"
+			a:text="↓"/>
 
 	<org.solovyev.android.calculator.function.FunctionParamEditText
-		a:id="@+id/function_param_edit_text"
-		a:layout_height="wrap_content"
-		a:layout_width="0dp"
-		a:layout_weight="3"
-		style="@style/cpp_default_text_size"
-		a:inputType="text" />
+			a:id="@+id/function_param_edit_text"
+			a:layout_height="wrap_content"
+			a:layout_width="0dp"
+			a:layout_weight="3"
+			style="@style/cpp_default_text_size"
+			a:inputType="text"/>
 
 </LinearLayout>
diff --git a/android-app/res/layout/help_faq_fragment.xml b/android-app/res/layout/help_faq_fragment.xml
index 59ded3cb..af47981b 100644
--- a/android-app/res/layout/help_faq_fragment.xml
+++ b/android-app/res/layout/help_faq_fragment.xml
@@ -1,36 +1,52 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_fragment_layout"
-	style="?cpp_fragment_layout_style"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent">
+			  a:id="@+id/main_fragment_layout"
+			  style="?cpp_fragment_layout_style"
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent">
 
 	<TextView
-		a:id="@+id/fragment_title"
-		a:layout_height="wrap_content"
-		a:layout_width="match_parent"
-		style="?cpp_fragment_title_style" />
+			a:id="@+id/fragment_title"
+			a:layout_height="wrap_content"
+			a:layout_width="match_parent"
+			style="?cpp_fragment_title_style"/>
 
-	<include layout="@layout/ad" />
+	<include layout="@layout/ad"/>
 
 	<ScrollView
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content">
+			a:layout_width="match_parent"
+			a:layout_height="wrap_content">
 
 		<TextView
-			a:text="@string/c_faq_content"
-			a:layout_width="match_parent"
-			a:layout_height="wrap_content"
-			a:gravity="top|left"
-			a:scrollbars="vertical"
-			style="@style/cpp_about_style" />
+				a:text="@string/c_faq_content"
+				a:layout_width="match_parent"
+				a:layout_height="wrap_content"
+				a:gravity="top|left"
+				a:scrollbars="vertical"
+				style="@style/cpp_about_style"/>
 
 	</ScrollView>
 
diff --git a/android-app/res/layout/help_hints_fragment.xml b/android-app/res/layout/help_hints_fragment.xml
index 3d73dc29..a6e8261c 100644
--- a/android-app/res/layout/help_hints_fragment.xml
+++ b/android-app/res/layout/help_hints_fragment.xml
@@ -1,35 +1,51 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_fragment_layout"
-	style="?cpp_fragment_layout_style"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent">
+			  a:id="@+id/main_fragment_layout"
+			  style="?cpp_fragment_layout_style"
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent">
 
 	<TextView
-		a:id="@+id/fragment_title"
-		a:layout_height="wrap_content"
-		a:layout_width="match_parent"
-		style="?cpp_fragment_title_style" />
+			a:id="@+id/fragment_title"
+			a:layout_height="wrap_content"
+			a:layout_width="match_parent"
+			style="?cpp_fragment_title_style"/>
 
-	<include layout="@layout/ad" />
+	<include layout="@layout/ad"/>
 
 	<ScrollView
-		a:layout_width="match_parent"
-		a:layout_height="match_parent">
+			a:layout_width="match_parent"
+			a:layout_height="match_parent">
 
 		<TextView
-			a:text="@string/c_hints_content"
-			a:layout_width="match_parent"
-			a:layout_height="wrap_content"
-			a:gravity="top|left"
-			a:scrollbars="vertical"
-			style="@style/cpp_about_style" />
+				a:text="@string/c_hints_content"
+				a:layout_width="match_parent"
+				a:layout_height="wrap_content"
+				a:gravity="top|left"
+				a:scrollbars="vertical"
+				style="@style/cpp_about_style"/>
 
 	</ScrollView>
 
diff --git a/android-app/res/layout/help_screens_fragment.xml b/android-app/res/layout/help_screens_fragment.xml
index 8915a39d..67f6f57f 100644
--- a/android-app/res/layout/help_screens_fragment.xml
+++ b/android-app/res/layout/help_screens_fragment.xml
@@ -1,35 +1,51 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_fragment_layout"
-	style="?cpp_fragment_layout_style"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent">
+			  a:id="@+id/main_fragment_layout"
+			  style="?cpp_fragment_layout_style"
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent">
 
 	<TextView
-		a:id="@+id/fragment_title"
-		a:layout_height="wrap_content"
-		a:layout_width="match_parent"
-		style="?cpp_fragment_title_style" />
+			a:id="@+id/fragment_title"
+			a:layout_height="wrap_content"
+			a:layout_width="match_parent"
+			style="?cpp_fragment_title_style"/>
 
-	<include layout="@layout/ad" />
+	<include layout="@layout/ad"/>
 
 	<ScrollView
-		a:layout_width="match_parent"
-		a:layout_height="match_parent">
+			a:layout_width="match_parent"
+			a:layout_height="match_parent">
 
 		<TextView
-			a:text="@string/c_screens_content"
-			a:layout_width="match_parent"
-			a:layout_height="wrap_content"
-			a:gravity="top|left"
-			a:scrollbars="vertical"
-			style="@style/cpp_about_style" />
+				a:text="@string/c_screens_content"
+				a:layout_width="match_parent"
+				a:layout_height="wrap_content"
+				a:gravity="top|left"
+				a:scrollbars="vertical"
+				style="@style/cpp_about_style"/>
 
 	</ScrollView>
 
diff --git a/android-app/res/layout/history_edit.xml b/android-app/res/layout/history_edit.xml
index fdc6600e..2829897b 100644
--- a/android-app/res/layout/history_edit.xml
+++ b/android-app/res/layout/history_edit.xml
@@ -1,53 +1,69 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <ScrollView xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="fill_parent"
-	a:layout_height="fill_parent">
+			a:layout_width="fill_parent"
+			a:layout_height="fill_parent">
 
 	<LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-		a:id="@+id/history_edit"
-		a:orientation="vertical"
-		a:layout_width="fill_parent"
-		a:layout_height="fill_parent"
-		a:scrollbars="vertical"
-		a:scrollbarAlwaysDrawVerticalTrack="true">
+				  a:id="@+id/history_edit"
+				  a:orientation="vertical"
+				  a:layout_width="fill_parent"
+				  a:layout_height="fill_parent"
+				  a:scrollbars="vertical"
+				  a:scrollbarAlwaysDrawVerticalTrack="true">
 
 		<TextView
-			a:layout_height="fill_parent"
-			a:layout_width="fill_parent"
-			a:padding="6dp"
-			style="@style/cpp_default_text_size"
-			a:text="@string/c_history_expression" />
+				a:layout_height="fill_parent"
+				a:layout_width="fill_parent"
+				a:padding="6dp"
+				style="@style/cpp_default_text_size"
+				a:text="@string/c_history_expression"/>
 
 		<TextView
-			a:id="@+id/history_edit_expression"
-			a:layout_width="fill_parent"
-			a:padding="6dp"
-			a:textStyle="bold"
-			a:layout_height="wrap_content"
-			style="@style/cpp_default_text_size"></TextView>
+				a:id="@+id/history_edit_expression"
+				a:layout_width="fill_parent"
+				a:padding="6dp"
+				a:textStyle="bold"
+				a:layout_height="wrap_content"
+				style="@style/cpp_default_text_size"></TextView>
 
 		<TextView
-			a:layout_height="fill_parent"
-			a:layout_width="fill_parent"
-			style="@style/cpp_default_text_size"
-			a:padding="6dp"
-			a:text="@string/c_history_comment" />
+				a:layout_height="fill_parent"
+				a:layout_width="fill_parent"
+				style="@style/cpp_default_text_size"
+				a:padding="6dp"
+				a:text="@string/c_history_comment"/>
 
 		<EditText
-			a:id="@+id/history_edit_comment"
-			a:layout_width="fill_parent"
-			a:layout_height="wrap_content"
-			a:minLines="4"
-			a:maxLines="4"
-			a:gravity="top|left"
-			style="@style/cpp_default_text_size"></EditText>
+				a:id="@+id/history_edit_comment"
+				a:layout_width="fill_parent"
+				a:layout_height="wrap_content"
+				a:minLines="4"
+				a:maxLines="4"
+				a:gravity="top|left"
+				style="@style/cpp_default_text_size"></EditText>
 
 	</LinearLayout>
 
diff --git a/android-app/res/layout/history_fragment.xml b/android-app/res/layout/history_fragment.xml
index b54f1d63..523779ca 100644
--- a/android-app/res/layout/history_fragment.xml
+++ b/android-app/res/layout/history_fragment.xml
@@ -1,19 +1,41 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_fragment_layout"
-	style="?cpp_fragment_layout_style"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent">
+			  a:id="@+id/main_fragment_layout"
+			  style="?cpp_fragment_layout_style"
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent">
 
 	<TextView
-		a:id="@+id/fragment_title"
-		a:layout_height="wrap_content"
-		a:layout_width="match_parent"
-		style="?cpp_fragment_title_style" />
+			a:id="@+id/fragment_title"
+			a:layout_height="wrap_content"
+			a:layout_width="match_parent"
+			style="?cpp_fragment_title_style"/>
 
-	<include layout="@layout/ad" />
+	<include layout="@layout/ad"/>
 
-	<ListView style="?cpp_fragment_list_view_style" />
+	<ListView style="?cpp_fragment_list_view_style"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout/history_item.xml b/android-app/res/layout/history_item.xml
index 071af8eb..c4e89abd 100644
--- a/android-app/res/layout/history_item.xml
+++ b/android-app/res/layout/history_item.xml
@@ -1,9 +1,25 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
diff --git a/android-app/res/layout/main_calculator.xml b/android-app/res/layout/main_calculator.xml
index 81a52749..3fd7a7f4 100644
--- a/android-app/res/layout/main_calculator.xml
+++ b/android-app/res/layout/main_calculator.xml
@@ -1,48 +1,64 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:id="@+id/main_layout"
-	a:orientation="vertical"
-	style="?cpp_main_layout_style">
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent"
+			  a:id="@+id/main_layout"
+			  a:orientation="vertical"
+			  style="?cpp_main_layout_style">
 
 	<LinearLayout
-		a:id="@+id/editorContainer"
-		a:layout_weight="2"
-		a:layout_width="match_parent"
-		a:layout_height="0dp" />
+			a:id="@+id/editorContainer"
+			a:layout_weight="2"
+			a:layout_width="match_parent"
+			a:layout_height="0dp"/>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
 		<include
-			layout="@layout/cpp_drag_button_equals"
-			a:layout_margin="@dimen/cpp_button_margin"
-			a:layout_weight="1"
-			a:layout_width="0dp"
-			a:layout_height="match_parent" />
+				layout="@layout/cpp_drag_button_equals"
+				a:layout_margin="@dimen/cpp_button_margin"
+				a:layout_weight="1"
+				a:layout_width="0dp"
+				a:layout_height="match_parent"/>
 
 		<LinearLayout
-			a:id="@+id/displayContainer"
-			a:layout_weight="4"
-			a:layout_width="0dp"
-			a:layout_height="match_parent" />
+				a:id="@+id/displayContainer"
+				a:layout_weight="4"
+				a:layout_width="0dp"
+				a:layout_height="match_parent"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:id="@+id/keyboardContainer"
-		a:layout_weight="5"
-		a:layout_width="match_parent"
-		a:layout_height="0dp" />
+			a:id="@+id/keyboardContainer"
+			a:layout_weight="5"
+			a:layout_width="match_parent"
+			a:layout_height="0dp"/>
 
 </LinearLayout>
diff --git a/android-app/res/layout/main_calculator_mobile.xml b/android-app/res/layout/main_calculator_mobile.xml
index 96cc2c6e..77d335b7 100644
--- a/android-app/res/layout/main_calculator_mobile.xml
+++ b/android-app/res/layout/main_calculator_mobile.xml
@@ -1,48 +1,64 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:id="@+id/main_layout"
-	a:orientation="vertical"
-	style="?cpp_main_layout_style">
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent"
+			  a:id="@+id/main_layout"
+			  a:orientation="vertical"
+			  style="?cpp_main_layout_style">
 
 	<LinearLayout
-		a:id="@+id/editorContainer"
-		a:layout_weight="2"
-		a:layout_width="match_parent"
-		a:layout_height="0dp" />
+			a:id="@+id/editorContainer"
+			a:layout_weight="2"
+			a:layout_width="match_parent"
+			a:layout_height="0dp"/>
 
 	<LinearLayout
-		a:layout_weight="1"
-		a:layout_width="match_parent"
-		a:layout_height="0dp">
+			a:layout_weight="1"
+			a:layout_width="match_parent"
+			a:layout_height="0dp">
 
 		<include
-			layout="@layout/cpp_drag_button_equals"
-			a:layout_margin="@dimen/cpp_button_margin"
-			a:layout_weight="1"
-			a:layout_width="0dp"
-			a:layout_height="match_parent" />
+				layout="@layout/cpp_drag_button_equals"
+				a:layout_margin="@dimen/cpp_button_margin"
+				a:layout_weight="1"
+				a:layout_width="0dp"
+				a:layout_height="match_parent"/>
 
 		<LinearLayout
-			a:id="@+id/displayContainer"
-			a:layout_weight="4"
-			a:layout_width="0dp"
-			a:layout_height="match_parent" />
+				a:id="@+id/displayContainer"
+				a:layout_weight="4"
+				a:layout_width="0dp"
+				a:layout_height="match_parent"/>
 
 	</LinearLayout>
 
 	<LinearLayout
-		a:id="@+id/keyboardContainer"
-		a:layout_weight="5"
-		a:layout_width="match_parent"
-		a:layout_height="0dp" />
+			a:id="@+id/keyboardContainer"
+			a:layout_weight="5"
+			a:layout_width="match_parent"
+			a:layout_height="0dp"/>
 
 </LinearLayout>
diff --git a/android-app/res/layout/main_empty.xml b/android-app/res/layout/main_empty.xml
index 726b4d6a..de6c14a1 100644
--- a/android-app/res/layout/main_empty.xml
+++ b/android-app/res/layout/main_empty.xml
@@ -1,14 +1,30 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_layout"
-	style="?cpp_main_layout_style"
-	a:orientation="vertical">
+			  a:id="@+id/main_layout"
+			  style="?cpp_main_layout_style"
+			  a:orientation="vertical">
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout/main_empty_multi_pane.xml b/android-app/res/layout/main_empty_multi_pane.xml
index 594d26d2..f7ccc04f 100644
--- a/android-app/res/layout/main_empty_multi_pane.xml
+++ b/android-app/res/layout/main_empty_multi_pane.xml
@@ -1,14 +1,30 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_layout"
-	style="?cpp_main_multi_pane_layout_style"
-	a:orientation="vertical">
+			  a:id="@+id/main_layout"
+			  style="?cpp_main_multi_pane_layout_style"
+			  a:orientation="vertical">
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout/math_entities_fragment.xml b/android-app/res/layout/math_entities_fragment.xml
index b54f1d63..523779ca 100644
--- a/android-app/res/layout/math_entities_fragment.xml
+++ b/android-app/res/layout/math_entities_fragment.xml
@@ -1,19 +1,41 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_fragment_layout"
-	style="?cpp_fragment_layout_style"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent">
+			  a:id="@+id/main_fragment_layout"
+			  style="?cpp_fragment_layout_style"
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent">
 
 	<TextView
-		a:id="@+id/fragment_title"
-		a:layout_height="wrap_content"
-		a:layout_width="match_parent"
-		style="?cpp_fragment_title_style" />
+			a:id="@+id/fragment_title"
+			a:layout_height="wrap_content"
+			a:layout_width="match_parent"
+			style="?cpp_fragment_title_style"/>
 
-	<include layout="@layout/ad" />
+	<include layout="@layout/ad"/>
 
-	<ListView style="?cpp_fragment_list_view_style" />
+	<ListView style="?cpp_fragment_list_view_style"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout/math_entity.xml b/android-app/res/layout/math_entity.xml
index f20c1709..7e05e3fd 100644
--- a/android-app/res/layout/math_entity.xml
+++ b/android-app/res/layout/math_entity.xml
@@ -1,42 +1,58 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_height="wrap_content"
-	a:layout_width="match_parent"
-	style="?cpp_fragment_list_view_item_style"
-	a:paddingBottom="@dimen/cpp_pane_padding"
-	a:orientation="horizontal">
+			  a:layout_height="wrap_content"
+			  a:layout_width="match_parent"
+			  style="?cpp_fragment_list_view_item_style"
+			  a:paddingBottom="@dimen/cpp_pane_padding"
+			  a:orientation="horizontal">
 
 	<LinearLayout
-		a:layout_height="wrap_content"
-		a:layout_width="0dp"
-		a:layout_weight="1"
-		a:orientation="vertical">
+			a:layout_height="wrap_content"
+			a:layout_width="0dp"
+			a:layout_weight="1"
+			a:orientation="vertical">
 
 		<TextView
-			a:id="@+id/math_entity_text"
-			a:layout_height="wrap_content"
-			a:layout_width="match_parent"
-			style="@style/math_entity_text" />
+				a:id="@+id/math_entity_text"
+				a:layout_height="wrap_content"
+				a:layout_width="match_parent"
+				style="@style/math_entity_text"/>
 
 		<TextView
-			a:id="@+id/math_entity_short_description"
-			a:layout_height="wrap_content"
-			a:layout_width="match_parent"
-			style="@style/math_entity_description" />
+				a:id="@+id/math_entity_short_description"
+				a:layout_height="wrap_content"
+				a:layout_width="match_parent"
+				style="@style/math_entity_description"/>
 	</LinearLayout>
 
 	<ImageView
-		a:id="@+id/math_entity_description_imageview"
-		a:scaleType="centerInside"
-		a:visibility="gone"
-		a:layout_height="match_parent"
-		a:layout_width="wrap_content" />
+			a:id="@+id/math_entity_description_imageview"
+			a:scaleType="centerInside"
+			a:visibility="gone"
+			a:layout_height="match_parent"
+			a:layout_width="wrap_content"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout/matrix_edit_fragment.xml b/android-app/res/layout/matrix_edit_fragment.xml
index c96b77c0..2ba2961b 100644
--- a/android-app/res/layout/matrix_edit_fragment.xml
+++ b/android-app/res/layout/matrix_edit_fragment.xml
@@ -1,59 +1,81 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:picker="http://schemas.android.com/apk/res-auto"
-	a:id="@+id/main_fragment_layout"
-	style="?cpp_fragment_layout_style"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent">
+			  xmlns:picker="http://schemas.android.com/apk/res-auto"
+			  a:id="@+id/main_fragment_layout"
+			  style="?cpp_fragment_layout_style"
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent">
 
 	<TextView
-		a:id="@+id/fragmentTitle"
-		a:layout_height="wrap_content"
-		a:layout_width="match_parent"
-		style="?cpp_fragment_title_style" />
+			a:id="@+id/fragmentTitle"
+			a:layout_height="wrap_content"
+			a:layout_width="match_parent"
+			style="?cpp_fragment_title_style"/>
 
-	<include layout="@layout/ad" />
+	<include layout="@layout/ad"/>
 
 	<LinearLayout
-		a:layout_height="match_parent"
-		a:layout_width="match_parent"
-		a:orientation="vertical">
-
-		<org.solovyev.android.view.Picker
-			a:id="@+id/matrix_cols_count_picker"
-			a:layout_height="wrap_content"
-			a:layout_width="wrap_content"
-			a:layout_gravity="center"
-			picker:orientation="horizontal" />
-
-		<LinearLayout
 			a:layout_height="match_parent"
 			a:layout_width="match_parent"
-			a:orientation="horizontal"
-			a:gravity="center">
+			a:orientation="vertical">
 
-			<org.solovyev.android.view.Picker
-				a:id="@+id/matrix_rows_count_picker"
+		<org.solovyev.android.view.Picker
+				a:id="@+id/matrix_cols_count_picker"
 				a:layout_height="wrap_content"
-				a:layout_width="wrap_content" />
+				a:layout_width="wrap_content"
+				a:layout_gravity="center"
+				picker:orientation="horizontal"/>
 
-			<ScrollView
+		<LinearLayout
 				a:layout_height="match_parent"
 				a:layout_width="match_parent"
-				a:scrollbars="vertical">
+				a:orientation="horizontal"
+				a:gravity="center">
+
+			<org.solovyev.android.view.Picker
+					a:id="@+id/matrix_rows_count_picker"
+					a:layout_height="wrap_content"
+					a:layout_width="wrap_content"/>
+
+			<ScrollView
+					a:layout_height="match_parent"
+					a:layout_width="match_parent"
+					a:scrollbars="vertical">
 
 				<HorizontalScrollView
-					a:layout_height="wrap_content"
-					a:layout_width="match_parent"
-					a:minHeight="300dp">
+						a:layout_height="wrap_content"
+						a:layout_width="match_parent"
+						a:minHeight="300dp">
 
 					<org.solovyev.android.calculator.matrix.MatrixView
-						a:id="@+id/matrix_layout"
-						a:layout_height="match_parent"
-						a:layout_width="match_parent"
-						a:minWidth="300dp" />
+							a:id="@+id/matrix_layout"
+							a:layout_height="match_parent"
+							a:layout_width="match_parent"
+							a:minWidth="300dp"/>
 
 				</HorizontalScrollView>
 
diff --git a/android-app/res/layout/matrix_edit_fragment_item.xml b/android-app/res/layout/matrix_edit_fragment_item.xml
index 3c5e064b..4a8647d8 100644
--- a/android-app/res/layout/matrix_edit_fragment_item.xml
+++ b/android-app/res/layout/matrix_edit_fragment_item.xml
@@ -1,13 +1,35 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_height="match_parent"
-	a:layout_width="match_parent">
+			  a:layout_height="match_parent"
+			  a:layout_width="match_parent">
 
 	<EditText
-		a:id="@+id/matrix_element_edittext"
-		a:layout_height="match_parent"
-		a:layout_width="match_parent"
-		a:text="test" />
+			a:id="@+id/matrix_element_edittext"
+			a:layout_height="match_parent"
+			a:layout_width="match_parent"
+			a:text="test"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout/notespp_announce.xml b/android-app/res/layout/notespp_announce.xml
index ef41cacf..0175318e 100644
--- a/android-app/res/layout/notespp_announce.xml
+++ b/android-app/res/layout/notespp_announce.xml
@@ -1,20 +1,36 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="fill_parent"
-	a:layout_height="fill_parent">
+			  a:layout_width="fill_parent"
+			  a:layout_height="fill_parent">
 
 	<TextView
-		a:id="@+id/notespp_announce"
-		style="@style/cpp_about_style"
-		a:layout_width="fill_parent"
-		a:text="@string/c_notespp_announce_text"
-		a:layout_height="fill_parent" />
+			a:id="@+id/notespp_announce"
+			style="@style/cpp_about_style"
+			a:layout_width="fill_parent"
+			a:text="@string/c_notespp_announce_text"
+			a:layout_height="fill_parent"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout/release_notes_fragment.xml b/android-app/res/layout/release_notes_fragment.xml
index e5cf3d40..3df1e24f 100644
--- a/android-app/res/layout/release_notes_fragment.xml
+++ b/android-app/res/layout/release_notes_fragment.xml
@@ -1,25 +1,41 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:orientation="vertical"
-	a:layout_width="fill_parent"
-	a:layout_height="fill_parent"
-	a:background="#ff000000">
+			  a:orientation="vertical"
+			  a:layout_width="fill_parent"
+			  a:layout_height="fill_parent"
+			  a:background="#ff000000">
 
 	<TextView
-		a:id="@+id/releaseNotesTextView"
-		a:layout_height="fill_parent"
-		a:layout_width="fill_parent"
-		a:layout_weight="1"
-		a:gravity="top|left"
-		a:scrollbars="vertical"
-		style="@style/cpp_about_style" />
+			a:id="@+id/releaseNotesTextView"
+			a:layout_height="fill_parent"
+			a:layout_width="fill_parent"
+			a:layout_weight="1"
+			a:gravity="top|left"
+			a:scrollbars="vertical"
+			style="@style/cpp_about_style"/>
 
 	<!--
 			a:scrollbarFadeDuration="0" is not support in  android_1.6_compatibility
diff --git a/android-app/res/layout/saved_history_item.xml b/android-app/res/layout/saved_history_item.xml
index 088407a8..f2af4d9a 100644
--- a/android-app/res/layout/saved_history_item.xml
+++ b/android-app/res/layout/saved_history_item.xml
@@ -1,46 +1,62 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:orientation="vertical"
-	style="?cpp_fragment_list_view_item_style">
+			  a:orientation="vertical"
+			  style="?cpp_fragment_list_view_item_style">
 
 	<TextView
-		a:id="@+id/history_time"
-		a:layout_width="fill_parent"
-		a:layout_height="fill_parent"
-		style="@style/history_time" />
-
-	<TextView
-		a:id="@+id/history_item"
-		a:layout_width="fill_parent"
-		a:layout_height="fill_parent"
-		a:textColor="@color/cpp_button_operator_text_color"
-		style="@style/history_item" />
-
-	<LinearLayout
-		a:id="@+id/history_item_comment_layout"
-		a:orientation="horizontal"
-		a:layout_width="fill_parent"
-		a:layout_height="fill_parent">
-
-		<TextView
-			a:id="@+id/history_item_comment_label"
-			a:layout_width="wrap_content"
-			a:layout_height="fill_parent"
-			a:text="@string/c_history_item_comment"
-			style="@style/history_item_label" />
-
-		<TextView
-			a:id="@+id/history_item_comment"
+			a:id="@+id/history_time"
 			a:layout_width="fill_parent"
 			a:layout_height="fill_parent"
-			style="@style/history_item" />
+			style="@style/history_time"/>
+
+	<TextView
+			a:id="@+id/history_item"
+			a:layout_width="fill_parent"
+			a:layout_height="fill_parent"
+			a:textColor="@color/cpp_button_operator_text_color"
+			style="@style/history_item"/>
+
+	<LinearLayout
+			a:id="@+id/history_item_comment_layout"
+			a:orientation="horizontal"
+			a:layout_width="fill_parent"
+			a:layout_height="fill_parent">
+
+		<TextView
+				a:id="@+id/history_item_comment_label"
+				a:layout_width="wrap_content"
+				a:layout_height="fill_parent"
+				a:text="@string/c_history_item_comment"
+				style="@style/history_item_label"/>
+
+		<TextView
+				a:id="@+id/history_item_comment"
+				a:layout_width="fill_parent"
+				a:layout_height="fill_parent"
+				style="@style/history_item"/>
 	</LinearLayout>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/layout/tabs.xml b/android-app/res/layout/tabs.xml
index ccd3f4b6..201a0245 100644
--- a/android-app/res/layout/tabs.xml
+++ b/android-app/res/layout/tabs.xml
@@ -1,30 +1,46 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <TabHost xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@android:id/tabhost"
-	a:layout_width="fill_parent"
-	a:layout_height="fill_parent">
+		 a:id="@android:id/tabhost"
+		 a:layout_width="fill_parent"
+		 a:layout_height="fill_parent">
 
 	<LinearLayout
-		a:orientation="vertical"
-		a:layout_width="fill_parent"
-		a:layout_height="fill_parent">
+			a:orientation="vertical"
+			a:layout_width="fill_parent"
+			a:layout_height="fill_parent">
 
 		<TabWidget
-			a:id="@android:id/tabs"
-			a:layout_width="fill_parent"
-			a:layout_height="wrap_content" />
+				a:id="@android:id/tabs"
+				a:layout_width="fill_parent"
+				a:layout_height="wrap_content"/>
 
 		<FrameLayout
-			a:id="@android:id/tabcontent"
-			a:layout_width="fill_parent"
-			a:layout_height="fill_parent" />
+				a:id="@android:id/tabcontent"
+				a:layout_width="fill_parent"
+				a:layout_height="fill_parent"/>
 
 	</LinearLayout>
 </TabHost>
\ No newline at end of file
diff --git a/android-app/res/layout/var_edit.xml b/android-app/res/layout/var_edit.xml
index 8eb40ff0..91ac4823 100644
--- a/android-app/res/layout/var_edit.xml
+++ b/android-app/res/layout/var_edit.xml
@@ -1,87 +1,103 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <ScrollView xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_height="wrap_content"
-	a:layout_width="match_parent"
-	a:minWidth="300dp">
+			a:layout_height="wrap_content"
+			a:layout_width="match_parent"
+			a:minWidth="300dp">
 
 	<LinearLayout
-		a:layout_height="wrap_content"
-		a:layout_width="match_parent"
-		a:orientation="vertical">
+			a:layout_height="wrap_content"
+			a:layout_width="match_parent"
+			a:orientation="vertical">
 
 		<TextView
-			a:layout_height="wrap_content"
-			a:layout_width="match_parent"
-			a:padding="6dp"
-			style="@style/cpp_default_text_size"
-			a:text="@string/c_var_name" />
+				a:layout_height="wrap_content"
+				a:layout_width="match_parent"
+				a:padding="6dp"
+				style="@style/cpp_default_text_size"
+				a:text="@string/c_var_name"/>
 
 		<EditText
-			a:id="@+id/var_edit_name"
-			a:layout_height="wrap_content"
-			a:layout_width="match_parent"
-			style="@style/cpp_default_text_size"
-			a:inputType="text" />
+				a:id="@+id/var_edit_name"
+				a:layout_height="wrap_content"
+				a:layout_width="match_parent"
+				style="@style/cpp_default_text_size"
+				a:inputType="text"/>
 
 		<TextView
-			a:layout_height="wrap_content"
-			a:layout_width="match_parent"
-			style="@style/cpp_default_text_size"
-			a:padding="6dp"
-			a:text="@string/c_var_value" />
+				a:layout_height="wrap_content"
+				a:layout_width="match_parent"
+				style="@style/cpp_default_text_size"
+				a:padding="6dp"
+				a:text="@string/c_var_value"/>
 
 		<EditText
-			a:id="@+id/var_edit_value"
-			a:layout_height="wrap_content"
-			a:layout_width="match_parent"
-			style="@style/cpp_default_text_size"
-			a:inputType="numberDecimal" />
+				a:id="@+id/var_edit_value"
+				a:layout_height="wrap_content"
+				a:layout_width="match_parent"
+				style="@style/cpp_default_text_size"
+				a:inputType="numberDecimal"/>
 
 		<TextView
-			a:layout_height="wrap_content"
-			a:layout_width="match_parent"
-			a:padding="6dp"
-			style="@style/cpp_default_text_size"
-			a:text="@string/c_var_description" />
+				a:layout_height="wrap_content"
+				a:layout_width="match_parent"
+				a:padding="6dp"
+				style="@style/cpp_default_text_size"
+				a:text="@string/c_var_description"/>
 
 		<EditText
-			a:id="@+id/var_edit_description"
-			a:layout_height="wrap_content"
-			a:layout_width="match_parent"
-			style="@style/cpp_default_text_size"
-			a:inputType="text" />
+				a:id="@+id/var_edit_description"
+				a:layout_height="wrap_content"
+				a:layout_width="match_parent"
+				style="@style/cpp_default_text_size"
+				a:inputType="text"/>
 
 		<LinearLayout
-			a:layout_height="wrap_content"
-			a:layout_width="match_parent">
+				a:layout_height="wrap_content"
+				a:layout_width="match_parent">
 
 			<Button
-				a:id="@+id/cancel_button"
-				a:layout_height="wrap_content"
-				a:layout_width="0dp"
-				a:layout_weight="1"
-				a:text="@string/c_cancel" />
+					a:id="@+id/cancel_button"
+					a:layout_height="wrap_content"
+					a:layout_width="0dp"
+					a:layout_weight="1"
+					a:text="@string/c_cancel"/>
 
 			<Button
-				a:id="@+id/remove_button"
-				a:layout_height="wrap_content"
-				a:layout_width="0dp"
-				a:layout_weight="1"
-				a:text="@string/c_remove" />
+					a:id="@+id/remove_button"
+					a:layout_height="wrap_content"
+					a:layout_width="0dp"
+					a:layout_weight="1"
+					a:text="@string/c_remove"/>
 
 			<Button
-				a:id="@+id/save_button"
-				a:layout_height="wrap_content"
-				a:layout_width="0dp"
-				a:layout_weight="1"
-				a:text="@string/c_save" />
+					a:id="@+id/save_button"
+					a:layout_height="wrap_content"
+					a:layout_width="0dp"
+					a:layout_weight="1"
+					a:text="@string/c_save"/>
 
 		</LinearLayout>
 
diff --git a/android-app/res/layout/vars_fragment.xml b/android-app/res/layout/vars_fragment.xml
index 1292d309..523779ca 100644
--- a/android-app/res/layout/vars_fragment.xml
+++ b/android-app/res/layout/vars_fragment.xml
@@ -1,25 +1,41 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:id="@+id/main_fragment_layout"
-	style="?cpp_fragment_layout_style"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent">
+			  a:id="@+id/main_fragment_layout"
+			  style="?cpp_fragment_layout_style"
+			  a:layout_width="match_parent"
+			  a:layout_height="match_parent">
 
 	<TextView
-		a:id="@+id/fragment_title"
-		a:layout_height="wrap_content"
-		a:layout_width="match_parent"
-		style="?cpp_fragment_title_style" />
+			a:id="@+id/fragment_title"
+			a:layout_height="wrap_content"
+			a:layout_width="match_parent"
+			style="?cpp_fragment_title_style"/>
 
-	<include layout="@layout/ad" />
+	<include layout="@layout/ad"/>
 
-	<ListView style="?cpp_fragment_list_view_style" />
+	<ListView style="?cpp_fragment_list_view_style"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/android-app/res/menu/functions_menu.xml b/android-app/res/menu/functions_menu.xml
index c294ad03..369c2013 100644
--- a/android-app/res/menu/functions_menu.xml
+++ b/android-app/res/menu/functions_menu.xml
@@ -1,9 +1,25 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <menu xmlns:a="http://schemas.android.com/apk/res/android">
diff --git a/android-app/res/menu/history_menu.xml b/android-app/res/menu/history_menu.xml
index 97017c87..801204a6 100644
--- a/android-app/res/menu/history_menu.xml
+++ b/android-app/res/menu/history_menu.xml
@@ -1,9 +1,25 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <menu xmlns:a="http://schemas.android.com/apk/res/android">
diff --git a/android-app/res/menu/plot_menu.xml b/android-app/res/menu/plot_menu.xml
index 827c28b6..38c30738 100644
--- a/android-app/res/menu/plot_menu.xml
+++ b/android-app/res/menu/plot_menu.xml
@@ -1,53 +1,69 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <menu xmlns:a="http://schemas.android.com/apk/res/android">
 
 	<item
-		a:id="@+id/menu_plot_2d"
-		a:title="@string/cpp_plot_2d"
-		a:icon="@drawable/kb_stats"
-		a:showAsAction="always" />
+			a:id="@+id/menu_plot_2d"
+			a:title="@string/cpp_plot_2d"
+			a:icon="@drawable/kb_stats"
+			a:showAsAction="always"/>
 
 	<item
-		a:id="@+id/menu_plot_3d"
-		a:title="@string/cpp_plot_3d"
-		a:icon="@drawable/kb_stats"
-		a:showAsAction="always" />
+			a:id="@+id/menu_plot_3d"
+			a:title="@string/cpp_plot_3d"
+			a:icon="@drawable/kb_stats"
+			a:showAsAction="always"/>
 
 	<item
-		a:id="@+id/menu_plot_fullscreen"
-		a:title="@string/cpp_fullscreen"
-		a:icon="@drawable/kb_expand"
-		a:showAsAction="always" />
+			a:id="@+id/menu_plot_fullscreen"
+			a:title="@string/cpp_fullscreen"
+			a:icon="@drawable/kb_expand"
+			a:showAsAction="always"/>
 
 	<item
-		a:id="@+id/menu_plot_range"
-		a:title="@string/cpp_plot_range"
-		a:icon="@drawable/kb_contract"
-		a:showAsAction="always" />
+			a:id="@+id/menu_plot_range"
+			a:title="@string/cpp_plot_range"
+			a:icon="@drawable/kb_contract"
+			a:showAsAction="always"/>
 
 	<item
-		a:id="@+id/menu_plot_functions"
-		a:title="@string/cpp_plot_functions"
-		a:icon="@drawable/kb_menu"
-		a:showAsAction="always" />
+			a:id="@+id/menu_plot_functions"
+			a:title="@string/cpp_plot_functions"
+			a:icon="@drawable/kb_menu"
+			a:showAsAction="always"/>
 
 	<item
-		a:id="@+id/menu_plot_schreeshot"
-		a:title="@string/cpp_plot_screenshot"
-		a:icon="@drawable/kb_disk"
-		a:showAsAction="always" />
+			a:id="@+id/menu_plot_schreeshot"
+			a:title="@string/cpp_plot_screenshot"
+			a:icon="@drawable/kb_disk"
+			a:showAsAction="always"/>
 
 	<item
-		a:id="@+id/menu_plot_settings"
-		a:title="@string/c_settings"
-		a:icon="@drawable/kb_settings"
-		a:showAsAction="ifRoom" />
+			a:id="@+id/menu_plot_settings"
+			a:title="@string/c_settings"
+			a:icon="@drawable/kb_settings"
+			a:showAsAction="ifRoom"/>
 
 </menu>
\ No newline at end of file
diff --git a/android-app/res/menu/vars_menu.xml b/android-app/res/menu/vars_menu.xml
index 3546b177..4a63178b 100644
--- a/android-app/res/menu/vars_menu.xml
+++ b/android-app/res/menu/vars_menu.xml
@@ -1,9 +1,25 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <menu xmlns:a="http://schemas.android.com/apk/res/android">
diff --git a/android-app/res/values-large-hdpi/dimens.xml b/android-app/res/values-large-hdpi/dimens.xml
index 3d891448..2ac09073 100644
--- a/android-app/res/values-large-hdpi/dimens.xml
+++ b/android-app/res/values-large-hdpi/dimens.xml
@@ -1,3 +1,25 @@
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<dimen name="cpp_editor_text_size">20sp</dimen>
 	<dimen name="cpp_editor_text_size_mobile">40sp</dimen>
diff --git a/android-app/res/values-large-mdpi/dimens.xml b/android-app/res/values-large-mdpi/dimens.xml
index 3db904ce..63c290f6 100644
--- a/android-app/res/values-large-mdpi/dimens.xml
+++ b/android-app/res/values-large-mdpi/dimens.xml
@@ -1,3 +1,25 @@
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<dimen name="cpp_editor_text_size">25sp</dimen>
 	<dimen name="cpp_editor_text_size_mobile">45sp</dimen>
diff --git a/android-app/res/values-large-tvdpi/dimens.xml b/android-app/res/values-large-tvdpi/dimens.xml
index bffa29a6..7ba4bb45 100644
--- a/android-app/res/values-large-tvdpi/dimens.xml
+++ b/android-app/res/values-large-tvdpi/dimens.xml
@@ -1,3 +1,25 @@
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<dimen name="cpp_editor_text_size">30sp</dimen>
 	<dimen name="cpp_editor_text_size_mobile">40sp</dimen>
diff --git a/android-app/res/values-large/arrays.xml b/android-app/res/values-large/arrays.xml
index 2f9fa56e..c6bcbbc0 100644
--- a/android-app/res/values-large/arrays.xml
+++ b/android-app/res/values-large/arrays.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app/res/values-large/dimens.xml b/android-app/res/values-large/dimens.xml
index 2cb54d84..6101d7b2 100644
--- a/android-app/res/values-large/dimens.xml
+++ b/android-app/res/values-large/dimens.xml
@@ -1,3 +1,25 @@
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<dimen name="cpp_fragment_text_size">17sp</dimen>
 	<dimen name="cpp_fragment_title_text_size">25sp</dimen>
diff --git a/android-app/res/values-normal-hdpi/dimens.xml b/android-app/res/values-normal-hdpi/dimens.xml
index da3f6a3a..8871387d 100644
--- a/android-app/res/values-normal-hdpi/dimens.xml
+++ b/android-app/res/values-normal-hdpi/dimens.xml
@@ -1,3 +1,25 @@
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<dimen name="cpp_keyboard_button_text_size">30dp</dimen>
 	<dimen name="cpp_keyboard_button_text_size_mobile">20dp</dimen>
diff --git a/android-app/res/values-normal-mdpi/dimens.xml b/android-app/res/values-normal-mdpi/dimens.xml
index 3758dbc2..82a56c62 100644
--- a/android-app/res/values-normal-mdpi/dimens.xml
+++ b/android-app/res/values-normal-mdpi/dimens.xml
@@ -1,3 +1,25 @@
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<dimen name="cpp_keyboard_button_text_size">24dp</dimen>
 	<dimen name="cpp_keyboard_button_text_size_mobile">25dp</dimen>
diff --git a/android-app/res/values-normal-tvdpi/dimens.xml b/android-app/res/values-normal-tvdpi/dimens.xml
index 2b8dee57..6a9251c2 100644
--- a/android-app/res/values-normal-tvdpi/dimens.xml
+++ b/android-app/res/values-normal-tvdpi/dimens.xml
@@ -1,3 +1,25 @@
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<dimen name="cpp_keyboard_button_text_size">33dp</dimen>
 	<dimen name="cpp_keyboard_button_text_size_mobile">25dp</dimen>
diff --git a/android-app/res/values-normal-xhdpi/dimens.xml b/android-app/res/values-normal-xhdpi/dimens.xml
index ea318ccd..9e168920 100644
--- a/android-app/res/values-normal-xhdpi/dimens.xml
+++ b/android-app/res/values-normal-xhdpi/dimens.xml
@@ -1,3 +1,25 @@
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<dimen name="cpp_keyboard_button_text_size">32dp</dimen>
 	<dimen name="cpp_keyboard_button_text_size_mobile">15dp</dimen>
diff --git a/android-app/res/values-normal/dimens.xml b/android-app/res/values-normal/dimens.xml
index f0591947..6662050b 100644
--- a/android-app/res/values-normal/dimens.xml
+++ b/android-app/res/values-normal/dimens.xml
@@ -1,3 +1,25 @@
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<dimen name="cpp_fragment_text_size">15sp</dimen>
 	<dimen name="cpp_fragment_title_text_size">20sp</dimen>
diff --git a/android-app/res/values-small-hdpi/dimens.xml b/android-app/res/values-small-hdpi/dimens.xml
index 14f05ebf..71124efa 100644
--- a/android-app/res/values-small-hdpi/dimens.xml
+++ b/android-app/res/values-small-hdpi/dimens.xml
@@ -1,3 +1,25 @@
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<dimen name="cpp_keyboard_button_text_size">22dp</dimen>
 	<dimen name="cpp_keyboard_button_text_size_mobile">14dp</dimen>
diff --git a/android-app/res/values-small-xhdpi/dimens.xml b/android-app/res/values-small-xhdpi/dimens.xml
index 7bc58b61..76de4b17 100644
--- a/android-app/res/values-small-xhdpi/dimens.xml
+++ b/android-app/res/values-small-xhdpi/dimens.xml
@@ -1,3 +1,25 @@
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<dimen name="cpp_keyboard_button_text_size">20dp</dimen>
 	<dimen name="cpp_keyboard_button_text_size_mobile">10dp</dimen>
diff --git a/android-app/res/values-small/dimens.xml b/android-app/res/values-small/dimens.xml
index 85f371a4..8a7f2b1e 100644
--- a/android-app/res/values-small/dimens.xml
+++ b/android-app/res/values-small/dimens.xml
@@ -1,3 +1,25 @@
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<dimen name="cpp_fragment_text_size">15sp</dimen>
 	<dimen name="cpp_fragment_title_text_size">20sp</dimen>
diff --git a/android-app/res/values-v14/dimens.xml b/android-app/res/values-v14/dimens.xml
index 1bd44cd5..f1c1fe72 100644
--- a/android-app/res/values-v14/dimens.xml
+++ b/android-app/res/values-v14/dimens.xml
@@ -1,3 +1,25 @@
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<dimen name="cpp_widget_margin">0dp</dimen>
 </resources>
\ No newline at end of file
diff --git a/android-app/res/values-xlarge-hdpi/dimens.xml b/android-app/res/values-xlarge-hdpi/dimens.xml
index c21e3248..77bb4fd0 100644
--- a/android-app/res/values-xlarge-hdpi/dimens.xml
+++ b/android-app/res/values-xlarge-hdpi/dimens.xml
@@ -1,4 +1,26 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<dimen name="cpp_editor_text_size">30sp</dimen>
 	<dimen name="cpp_editor_text_size_mobile">75sp</dimen>
diff --git a/android-app/res/values-xlarge-mdpi/dimens.xml b/android-app/res/values-xlarge-mdpi/dimens.xml
index f1cac223..07e9702f 100644
--- a/android-app/res/values-xlarge-mdpi/dimens.xml
+++ b/android-app/res/values-xlarge-mdpi/dimens.xml
@@ -1,4 +1,26 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<dimen name="cpp_editor_text_size">40sp</dimen>
 	<dimen name="cpp_editor_text_size_mobile">75sp</dimen>
diff --git a/android-app/res/values-xlarge/dimens.xml b/android-app/res/values-xlarge/dimens.xml
index 33f172d5..7ce8aa70 100644
--- a/android-app/res/values-xlarge/dimens.xml
+++ b/android-app/res/values-xlarge/dimens.xml
@@ -1,3 +1,25 @@
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <resources>
 	<dimen name="cpp_fragment_text_size">30sp</dimen>
 	<dimen name="cpp_fragment_title_text_size">40sp</dimen>
diff --git a/android-app/res/values/arrays.xml b/android-app/res/values/arrays.xml
index 9f996d40..7742c23a 100644
--- a/android-app/res/values/arrays.xml
+++ b/android-app/res/values/arrays.xml
@@ -1,7 +1,23 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app/res/values/preferences.xml b/android-app/res/values/preferences.xml
index 1668649e..39adf475 100644
--- a/android-app/res/values/preferences.xml
+++ b/android-app/res/values/preferences.xml
@@ -1,7 +1,23 @@
 <?xml version="1.0" encoding="utf-8"?><!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app/res/values/styles_history.xml b/android-app/res/values/styles_history.xml
index a2b184fe..7ef2b9db 100644
--- a/android-app/res/values/styles_history.xml
+++ b/android-app/res/values/styles_history.xml
@@ -1,14 +1,30 @@
 <!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
 
-	<style name="history_time" parent="math_entity_text" />
+	<style name="history_time" parent="math_entity_text"/>
 
-	<style name="history_item" parent="math_entity_description" />
+	<style name="history_item" parent="math_entity_description"/>
 
 	<style name="history_item_label" parent="math_entity_description">
 		<item name="android:textStyle">bold</item>
diff --git a/android-app/res/values/styles_var.xml b/android-app/res/values/styles_var.xml
index 90b1506c..88dd969e 100644
--- a/android-app/res/values/styles_var.xml
+++ b/android-app/res/values/styles_var.xml
@@ -1,7 +1,23 @@
 <?xml version="1.0" encoding="utf-8"?><!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
   -->
 
 <resources>
diff --git a/android-app/res/xml/calculator_widget_info_3x3.xml b/android-app/res/xml/calculator_widget_info_3x3.xml
index 71c99390..80d33ce9 100644
--- a/android-app/res/xml/calculator_widget_info_3x3.xml
+++ b/android-app/res/xml/calculator_widget_info_3x3.xml
@@ -1,10 +1,32 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <appwidget-provider xmlns:a="http://schemas.android.com/apk/res/android"
-	a:minWidth="180dp"
-	a:minHeight="180dp"
-	a:initialLayout="@layout/widget_layout"
-	a:previewImage="@drawable/widget_preview"
-	a:resizeMode="horizontal|vertical">
+					a:minWidth="180dp"
+					a:minHeight="180dp"
+					a:initialLayout="@layout/widget_layout"
+					a:previewImage="@drawable/widget_preview"
+					a:resizeMode="horizontal|vertical">
 
 </appwidget-provider>
\ No newline at end of file
diff --git a/android-app/res/xml/calculator_widget_info_3x4.xml b/android-app/res/xml/calculator_widget_info_3x4.xml
index f4ab2b4c..bd3e878b 100644
--- a/android-app/res/xml/calculator_widget_info_3x4.xml
+++ b/android-app/res/xml/calculator_widget_info_3x4.xml
@@ -1,10 +1,32 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <appwidget-provider xmlns:a="http://schemas.android.com/apk/res/android"
-	a:minWidth="180dp"
-	a:minHeight="250dp"
-	a:initialLayout="@layout/widget_layout"
-	a:previewImage="@drawable/widget_preview"
-	a:resizeMode="horizontal|vertical">
+					a:minWidth="180dp"
+					a:minHeight="250dp"
+					a:initialLayout="@layout/widget_layout"
+					a:previewImage="@drawable/widget_preview"
+					a:resizeMode="horizontal|vertical">
 
 </appwidget-provider>
\ No newline at end of file
diff --git a/android-app/res/xml/calculator_widget_info_4x4.xml b/android-app/res/xml/calculator_widget_info_4x4.xml
index e98523aa..89585b63 100644
--- a/android-app/res/xml/calculator_widget_info_4x4.xml
+++ b/android-app/res/xml/calculator_widget_info_4x4.xml
@@ -1,10 +1,32 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <appwidget-provider xmlns:a="http://schemas.android.com/apk/res/android"
-	a:minWidth="250dp"
-	a:minHeight="250dp"
-	a:initialLayout="@layout/widget_layout"
-	a:previewImage="@drawable/widget_preview"
-	a:resizeMode="horizontal|vertical">
+					a:minWidth="250dp"
+					a:minHeight="250dp"
+					a:initialLayout="@layout/widget_layout"
+					a:previewImage="@drawable/widget_preview"
+					a:resizeMode="horizontal|vertical">
 
 </appwidget-provider>
\ No newline at end of file
diff --git a/android-app/res/xml/calculator_widget_info_4x5.xml b/android-app/res/xml/calculator_widget_info_4x5.xml
index 0734f330..a64b34a4 100644
--- a/android-app/res/xml/calculator_widget_info_4x5.xml
+++ b/android-app/res/xml/calculator_widget_info_4x5.xml
@@ -1,10 +1,32 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <appwidget-provider xmlns:a="http://schemas.android.com/apk/res/android"
-	a:minWidth="250dp"
-	a:minHeight="320dp"
-	a:initialLayout="@layout/widget_layout"
-	a:previewImage="@drawable/widget_preview"
-	a:resizeMode="horizontal|vertical">
+					a:minWidth="250dp"
+					a:minHeight="320dp"
+					a:initialLayout="@layout/widget_layout"
+					a:previewImage="@drawable/widget_preview"
+					a:resizeMode="horizontal|vertical">
 
 </appwidget-provider>
\ No newline at end of file
diff --git a/android-app/res/xml/preferences.xml b/android-app/res/xml/preferences.xml
index d9fc34f8..a58ea9c6 100644
--- a/android-app/res/xml/preferences.xml
+++ b/android-app/res/xml/preferences.xml
@@ -1,13 +1,35 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <PreferenceScreen xmlns:a="http://schemas.android.com/apk/res/android">
 
 	<Preference
-		a:key="@string/p_calc_ad_free_key"
-		a:title="@string/c_calc_ad_free_title"
-		a:summary="@string/c_calc_ad_free_summary"
-		a:defaultValue="false" />
+			a:key="@string/p_calc_ad_free_key"
+			a:title="@string/c_calc_ad_free_title"
+			a:summary="@string/c_calc_ad_free_summary"
+			a:defaultValue="false"/>
 
-	<org.solovyev.android.ads.AdViewPreference a:layout="@layout/acl_adview_pref" />
+	<org.solovyev.android.ads.AdViewPreference a:layout="@layout/acl_adview_pref"/>
 
 </PreferenceScreen>
\ No newline at end of file
diff --git a/android-app/res/xml/preferences_appearance.xml b/android-app/res/xml/preferences_appearance.xml
index edc8ae7e..e7ad773c 100644
--- a/android-app/res/xml/preferences_appearance.xml
+++ b/android-app/res/xml/preferences_appearance.xml
@@ -1,61 +1,83 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <PreferenceScreen xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:range="http://schemas.android.com/apk/res-auto">
+				  xmlns:range="http://schemas.android.com/apk/res-auto">
 
 	<PreferenceScreen a:title="@string/c_prefs_appearance_category">
 
-		<org.solovyev.android.ads.AdViewPreference a:layout="@layout/acl_adview_pref" />
+		<org.solovyev.android.ads.AdViewPreference a:layout="@layout/acl_adview_pref"/>
 
 		<android.preference.CheckBoxPreference
-			a:key="@string/p_calc_color_display_key"
-			a:summary="@string/c_calc_color_display_summary"
-			a:title="@string/c_calc_color_display_title"
-			a:defaultValue="true" />
+				a:key="@string/p_calc_color_display_key"
+				a:summary="@string/c_calc_color_display_summary"
+				a:title="@string/c_calc_color_display_title"
+				a:defaultValue="true"/>
 
 		<android.preference.CheckBoxPreference
-			a:key="@string/p_calc_haptic_feedback_key"
-			a:summary="@string/c_calc_haptic_feedback_summary"
-			a:title="@string/c_calc_haptic_feedback_title"
-			a:defaultValue="false" />
+				a:key="@string/p_calc_haptic_feedback_key"
+				a:summary="@string/c_calc_haptic_feedback_summary"
+				a:title="@string/c_calc_haptic_feedback_title"
+				a:defaultValue="false"/>
 
 		<ListPreference
-			a:key="@string/p_calc_haptic_feedback_duration_key"
-			a:title="@string/p_calc_haptic_feedback_duration_title"
-			a:entries="@array/p_calc_haptic_feedback_duration_names"
-			a:summary="@string/p_calc_haptic_feedback_duration_summary"
-			a:entryValues="@array/p_calc_haptic_feedback_duration_values" />
+				a:key="@string/p_calc_haptic_feedback_duration_key"
+				a:title="@string/p_calc_haptic_feedback_duration_title"
+				a:entries="@array/p_calc_haptic_feedback_duration_names"
+				a:summary="@string/p_calc_haptic_feedback_duration_summary"
+				a:entryValues="@array/p_calc_haptic_feedback_duration_values"/>
 
 		<ListPreference
-			a:key="@string/p_calc_multiplication_sign_key"
-			a:title="@string/c_calc_multiplication_sign"
-			a:entries="@array/p_multiplication_sign_values"
-			a:summary="@string/c_calc_multiplication_sign_summary"
-			a:entryValues="@array/p_multiplication_sign_values" />
+				a:key="@string/p_calc_multiplication_sign_key"
+				a:title="@string/c_calc_multiplication_sign"
+				a:entries="@array/p_multiplication_sign_values"
+				a:summary="@string/c_calc_multiplication_sign_summary"
+				a:entryValues="@array/p_multiplication_sign_values"/>
 
 		<ListPreference
-			a:key="@string/p_calc_theme_key"
-			a:title="@string/c_calc_theme"
-			a:entries="@array/p_theme_names"
-			a:summary="@string/c_calc_theme_summary"
-			a:entryValues="@array/p_theme_values" />
+				a:key="@string/p_calc_theme_key"
+				a:title="@string/c_calc_theme"
+				a:entries="@array/p_theme_names"
+				a:summary="@string/c_calc_theme_summary"
+				a:entryValues="@array/p_theme_values"/>
 
 		<ListPreference
-			a:key="@string/p_calc_layout_key"
-			a:title="@string/c_calc_layout"
-			a:entries="@array/p_layout_names"
-			a:summary="@string/c_calc_layout_summary"
-			a:entryValues="@array/p_layout_values" />
+				a:key="@string/p_calc_layout_key"
+				a:title="@string/c_calc_layout"
+				a:entries="@array/p_layout_names"
+				a:summary="@string/c_calc_layout_summary"
+				a:entryValues="@array/p_layout_values"/>
 
 
 		<org.solovyev.android.prefs.FloatRangeSeekBarPreference
-			a:key="@string/p_drag_distance_key"
-			a:title="@string/c_swipe_distance"
-			a:summary="@string/c_swipe_distance_summary"
-			a:text=" pxs"
-			a:defaultValue="35;350"
-			range:step="10"
-			range:boundaries="10;500" />
+				a:key="@string/p_drag_distance_key"
+				a:title="@string/c_swipe_distance"
+				a:summary="@string/c_swipe_distance_summary"
+				a:text=" pxs"
+				a:defaultValue="35;350"
+				range:step="10"
+				range:boundaries="10;500"/>
 
 		<!--	  <org.solovyev.android.prefs.FloatRangeSeekBarPreference
 										a:key="@string/p_drag_duration_key"
@@ -74,33 +96,33 @@
 										range:boundaries="0;45"/>-->
 
 		<android.preference.CheckBoxPreference
-			a:key="autoOrientation"
-			a:title="@string/c_auto_orientation_title"
-			a:summary="@string/c_auto_orientation_summary"
-			a:defaultValue="true" />
+				a:key="autoOrientation"
+				a:title="@string/c_auto_orientation_title"
+				a:summary="@string/c_auto_orientation_summary"
+				a:defaultValue="true"/>
 
 
 		<android.preference.CheckBoxPreference
-			a:key="showEqualsButton"
-			a:title="@string/c_show_equals_button_title"
-			a:summary="@string/c_show_equals_button_summary"
-			a:defaultValue="true" />
+				a:key="showEqualsButton"
+				a:title="@string/c_show_equals_button_title"
+				a:summary="@string/c_show_equals_button_summary"
+				a:defaultValue="true"/>
 
 		<android.preference.CheckBoxPreference
-			a:key="hideNumeralBaseDigits"
-			a:title="@string/c_hide_numeral_base_digits_title"
-			a:summary="@string/c_hide_numeral_base_digits_summary"
-			a:defaultValue="true" />
+				a:key="hideNumeralBaseDigits"
+				a:title="@string/c_hide_numeral_base_digits_title"
+				a:summary="@string/c_hide_numeral_base_digits_summary"
+				a:defaultValue="true"/>
 
 		<android.preference.CheckBoxPreference
-			a:key="history_show_intermediate_calculations"
-			a:title="@string/prefs_history_show_intermediate_calculations_title"
-			a:summary="@string/prefs_history_show_intermediate_calculations_summary" />
+				a:key="history_show_intermediate_calculations"
+				a:title="@string/prefs_history_show_intermediate_calculations_title"
+				a:summary="@string/prefs_history_show_intermediate_calculations_summary"/>
 
 		<android.preference.CheckBoxPreference
 				a:key="preventScreenFromFading"
 				a:title="@string/prefs_prevent_screen_from_fading_title"
-				a:summary="@string/prefs_prevent_screen_from_fading_summary" />
+				a:summary="@string/prefs_prevent_screen_from_fading_summary"/>
 
 	</PreferenceScreen>
 
diff --git a/android-app/res/xml/preferences_calculations.xml b/android-app/res/xml/preferences_calculations.xml
index 9e44c35f..02e4bdc3 100644
--- a/android-app/res/xml/preferences_calculations.xml
+++ b/android-app/res/xml/preferences_calculations.xml
@@ -1,82 +1,104 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <PreferenceScreen xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:range="http://schemas.android.com/apk/res-auto">
+				  xmlns:range="http://schemas.android.com/apk/res-auto">
 
 	<PreferenceScreen a:title="@string/c_prefs_calculations_category">
 
-		<org.solovyev.android.ads.AdViewPreference a:layout="@layout/acl_adview_pref" />
+		<org.solovyev.android.ads.AdViewPreference a:layout="@layout/acl_adview_pref"/>
 
 		<android.preference.CheckBoxPreference
-			a:key="@string/p_calc_round_result_key"
-			a:summary="@string/c_calc_round_result_summary"
-			a:title="@string/c_calc_round_result_title"
-			a:defaultValue="true" />
+				a:key="@string/p_calc_round_result_key"
+				a:summary="@string/c_calc_round_result_summary"
+				a:title="@string/c_calc_round_result_title"
+				a:defaultValue="true"/>
 
 		<org.solovyev.android.prefs.IntegerPickerDialogPreference
-			a:key="@string/p_calc_result_precision_key"
-			a:title="@string/p_calc_result_precision_title"
-			a:summary="@string/c_calc_result_precision_summary"
-			a:defaultValue="5"
-			range:boundaries="0;16" />
+				a:key="@string/p_calc_result_precision_key"
+				a:title="@string/p_calc_result_precision_title"
+				a:summary="@string/c_calc_result_precision_summary"
+				a:defaultValue="5"
+				range:boundaries="0;16"/>
 
 		<android.preference.CheckBoxPreference
-			a:key="@string/p_calc_science_notation_key"
-			a:summary="@string/c_calc_science_notation_summary"
-			a:title="@string/c_calc_science_notation_title"
-			a:defaultValue="false" />
+				a:key="@string/p_calc_science_notation_key"
+				a:summary="@string/c_calc_science_notation_summary"
+				a:title="@string/c_calc_science_notation_title"
+				a:defaultValue="false"/>
 
 		<ListPreference
-			a:key="@string/p_calc_grouping_separator_key"
-			a:title="@string/c_calc_grouping_separator"
-			a:entries="@array/p_grouping_separator_names"
-			a:summary="@string/c_calc_grouping_separator_summary"
-			a:entryValues="@array/p_grouping_separator_values" />
+				a:key="@string/p_calc_grouping_separator_key"
+				a:title="@string/c_calc_grouping_separator"
+				a:entries="@array/p_grouping_separator_names"
+				a:summary="@string/c_calc_grouping_separator_summary"
+				a:entryValues="@array/p_grouping_separator_values"/>
 
 		<ListPreference
-			a:key="preferred_angle_units"
-			a:title="@string/p_preferred_angle_units_title"
-			a:summary="@string/p_preferred_angle_units_summary"
-			a:entries="@array/p_angle_units_names"
-			a:entryValues="@array/p_angle_units" />
+				a:key="preferred_angle_units"
+				a:title="@string/p_preferred_angle_units_title"
+				a:summary="@string/p_preferred_angle_units_summary"
+				a:entries="@array/p_angle_units_names"
+				a:entryValues="@array/p_angle_units"/>
 
 		<ListPreference
-			a:key="@string/p_calc_angle_units_key"
-			a:title="@string/c_calc_angle_units"
-			a:entries="@array/p_angle_units_names"
-			a:summary="@string/c_angle_units_summary"
-			a:entryValues="@array/p_angle_units" />
+				a:key="@string/p_calc_angle_units_key"
+				a:title="@string/c_calc_angle_units"
+				a:entries="@array/p_angle_units_names"
+				a:summary="@string/c_angle_units_summary"
+				a:entryValues="@array/p_angle_units"/>
 
 		<ListPreference
-			a:key="preferred_numeral_base"
-			a:title="@string/p_preferred_numeral_base_title"
-			a:summary="@string/p_preferred_numeral_base_summary"
-			a:entries="@array/p_numeral_bases_names"
-			a:entryValues="@array/p_numeral_bases" />
+				a:key="preferred_numeral_base"
+				a:title="@string/p_preferred_numeral_base_title"
+				a:summary="@string/p_preferred_numeral_base_summary"
+				a:entries="@array/p_numeral_bases_names"
+				a:entryValues="@array/p_numeral_bases"/>
 
 		<ListPreference
-			a:key="@string/p_calc_numeral_bases_key"
-			a:title="@string/c_calc_numeral_bases"
-			a:entries="@array/p_numeral_bases_names"
-			a:summary="@string/c_numeral_bases_summary"
-			a:entryValues="@array/p_numeral_bases" />
+				a:key="@string/p_calc_numeral_bases_key"
+				a:title="@string/c_calc_numeral_bases"
+				a:entries="@array/p_numeral_bases_names"
+				a:summary="@string/c_numeral_bases_summary"
+				a:entryValues="@array/p_numeral_bases"/>
 
 		<org.solovyev.android.prefs.IntegerPickerDialogPreference
-			a:key="@string/p_calc_max_calculation_time_key"
-			a:title="@string/p_calc_max_calculation_time_title"
-			a:summary="@string/p_calc_max_calculation_time_summary"
-			a:defaultValue="5"
-			range:boundaries="3;1000" />
+				a:key="@string/p_calc_max_calculation_time_key"
+				a:title="@string/p_calc_max_calculation_time_title"
+				a:summary="@string/p_calc_max_calculation_time_summary"
+				a:defaultValue="5"
+				range:boundaries="3;1000"/>
 
 		<android.preference.CheckBoxPreference
-			a:key="calculations_calculate_on_fly"
-			a:title="@string/p_calculations_calculate_on_fly_title"
-			a:summary="@string/p_calculations_calculate_on_fly_summary" />
+				a:key="calculations_calculate_on_fly"
+				a:title="@string/p_calculations_calculate_on_fly_title"
+				a:summary="@string/p_calculations_calculate_on_fly_summary"/>
 
 		<android.preference.CheckBoxPreference
-			a:key="show_calculation_messages_dialog"
-			a:title="@string/p_show_calculation_messages_dialog_title"
-			a:summary="@string/p_show_calculation_messages_dialog_summary" />
+				a:key="show_calculation_messages_dialog"
+				a:title="@string/p_show_calculation_messages_dialog_title"
+				a:summary="@string/p_show_calculation_messages_dialog_summary"/>
 
 	</PreferenceScreen>
 
diff --git a/android-app/res/xml/preferences_onscreen.xml b/android-app/res/xml/preferences_onscreen.xml
index 24d31726..25b362ca 100644
--- a/android-app/res/xml/preferences_onscreen.xml
+++ b/android-app/res/xml/preferences_onscreen.xml
@@ -1,20 +1,42 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <PreferenceScreen xmlns:a="http://schemas.android.com/apk/res/android">
 
 	<PreferenceScreen a:title="@string/prefs_onscreen_title">
 
-		<org.solovyev.android.ads.AdViewPreference a:layout="@layout/acl_adview_pref" />
+		<org.solovyev.android.ads.AdViewPreference a:layout="@layout/acl_adview_pref"/>
 
 		<android.preference.CheckBoxPreference
-			a:key="onscreen_start_on_boot"
-			a:title="@string/prefs_onscreen_start_on_boot_title"
-			a:summary="@string/prefs_onscreen_start_on_boot_summary" />
+				a:key="onscreen_start_on_boot"
+				a:title="@string/prefs_onscreen_start_on_boot_title"
+				a:summary="@string/prefs_onscreen_start_on_boot_summary"/>
 
 		<android.preference.CheckBoxPreference
-			a:key="onscreen_show_app_icon"
-			a:title="@string/prefs_onscreen_show_app_icon_title"
-			a:summary="@string/prefs_onscreen_show_app_icon_summary" />
+				a:key="onscreen_show_app_icon"
+				a:title="@string/prefs_onscreen_show_app_icon_title"
+				a:summary="@string/prefs_onscreen_show_app_icon_summary"/>
 
 	</PreferenceScreen>
 
diff --git a/android-app/res/xml/preferences_other.xml b/android-app/res/xml/preferences_other.xml
index b7b58a52..2407d5d8 100644
--- a/android-app/res/xml/preferences_other.xml
+++ b/android-app/res/xml/preferences_other.xml
@@ -1,31 +1,53 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <PreferenceScreen xmlns:a="http://schemas.android.com/apk/res/android">
 
 	<PreferenceScreen a:title="@string/c_prefs_other_category">
 
-		<org.solovyev.android.ads.AdViewPreference a:layout="@layout/acl_adview_pref" />
+		<org.solovyev.android.ads.AdViewPreference a:layout="@layout/acl_adview_pref"/>
 
 		<android.preference.CheckBoxPreference
-			a:key="@string/p_calc_show_release_notes_key"
-			a:summary="@string/c_calc_show_release_notes_summary"
-			a:title="@string/c_calc_show_release_notes_title"
-			a:defaultValue="true" />
+				a:key="@string/p_calc_show_release_notes_key"
+				a:summary="@string/c_calc_show_release_notes_summary"
+				a:title="@string/c_calc_show_release_notes_title"
+				a:defaultValue="true"/>
 
 		<android.preference.CheckBoxPreference
-			a:key="@string/p_calc_use_back_button_as_prev_key"
-			a:summary="@string/c_calc_use_back_button_as_prev_summary"
-			a:title="@string/c_calc_use_back_button_as_prev_title"
-			a:defaultValue="false" />
+				a:key="@string/p_calc_use_back_button_as_prev_key"
+				a:summary="@string/c_calc_use_back_button_as_prev_summary"
+				a:title="@string/c_calc_use_back_button_as_prev_title"
+				a:defaultValue="false"/>
 
 		<Preference
-			a:key="@string/p_clear_billing_info_key"
-			a:summary="@string/c_clear_billing_info_summary"
-			a:title="@string/c_clear_billing_info_title" />
+				a:key="@string/p_clear_billing_info_key"
+				a:summary="@string/c_clear_billing_info_summary"
+				a:title="@string/c_clear_billing_info_title"/>
 
 		<Preference
 				a:key="restart_wizard"
-				a:title="@string/cpp_restart_wizard" />
+				a:title="@string/cpp_restart_wizard"/>
 
 	</PreferenceScreen>
 
diff --git a/android-app/res/xml/preferences_plot.xml b/android-app/res/xml/preferences_plot.xml
index 4e6ebc57..9166bf4c 100644
--- a/android-app/res/xml/preferences_plot.xml
+++ b/android-app/res/xml/preferences_plot.xml
@@ -1,15 +1,37 @@
 <?xml version="1.0" encoding="utf-8"?>
 
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
 <PreferenceScreen xmlns:a="http://schemas.android.com/apk/res/android">
 
 	<PreferenceScreen a:title="@string/prefs_graph_screen_title">
 
-		<org.solovyev.android.ads.AdViewPreference a:layout="@layout/acl_adview_pref" />
+		<org.solovyev.android.ads.AdViewPreference a:layout="@layout/acl_adview_pref"/>
 
 		<android.preference.CheckBoxPreference
-			a:key="graph_plot_imag"
-			a:title="@string/cpp_prefs_graph_plot_imag_title"
-			a:summary="@string/cpp_prefs_graph_plot_imag_summary" />
+				a:key="graph_plot_imag"
+				a:title="@string/cpp_prefs_graph_plot_imag_title"
+				a:summary="@string/cpp_prefs_graph_plot_imag_summary"/>
 
 	</PreferenceScreen>
 
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/AbstractCalculatorHelper.java b/android-app/src/main/java/org/solovyev/android/calculator/AbstractCalculatorHelper.java
index f1ed3577..6addd298 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/AbstractCalculatorHelper.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/AbstractCalculatorHelper.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.app.Activity;
@@ -9,8 +31,10 @@ import android.preference.PreferenceManager;
 import android.util.Log;
 import android.view.MotionEvent;
 import android.view.View;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.history.CalculatorHistoryState;
 import org.solovyev.android.calculator.view.AngleUnitsButton;
 import org.solovyev.android.calculator.view.NumeralBasesButton;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculator.java b/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculator.java
index caa9819d..b8185e1a 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculator.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculator.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.app.Activity;
@@ -7,8 +29,10 @@ import android.content.SharedPreferences;
 import android.preference.PreferenceManager;
 import jscl.NumeralBase;
 import jscl.math.Generic;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.history.CalculatorHistoryState;
 import org.solovyev.android.calculator.jscl.JsclOperation;
 import org.solovyev.common.history.HistoryAction;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculatorClipboard.java b/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculatorClipboard.java
index 493f044f..e32ef9ae 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculatorClipboard.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculatorClipboard.java
@@ -1,8 +1,31 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.app.Application;
 import android.content.Context;
 import android.text.ClipboardManager;
+
 import javax.annotation.Nonnull;
 
 /**
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculatorKeyboard.java b/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculatorKeyboard.java
index dfe030ec..2c2cb5df 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculatorKeyboard.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculatorKeyboard.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.app.Activity;
@@ -6,8 +28,10 @@ import android.content.Context;
 import android.content.SharedPreferences;
 import android.os.Vibrator;
 import android.preference.PreferenceManager;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.view.VibratorContainer;
 
 /**
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculatorLogger.java b/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculatorLogger.java
index 7f227e1f..594e471a 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculatorLogger.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculatorLogger.java
@@ -1,6 +1,29 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.util.Log;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculatorNotifier.java b/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculatorNotifier.java
index ffcdd8dc..809f41ce 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculatorNotifier.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculatorNotifier.java
@@ -1,10 +1,34 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.app.Application;
 import android.os.Handler;
 import android.widget.Toast;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.Threads;
 import org.solovyev.android.msg.AndroidMessage;
 import org.solovyev.common.msg.Message;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculatorPreferenceService.java b/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculatorPreferenceService.java
index 509ee3b2..81f15b36 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculatorPreferenceService.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/AndroidCalculatorPreferenceService.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.app.Application;
@@ -5,7 +27,9 @@ import android.content.SharedPreferences;
 import android.preference.PreferenceManager;
 import jscl.AngleUnit;
 import jscl.NumeralBase;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.model.AndroidCalculatorEngine;
 import org.solovyev.android.msg.AndroidMessage;
 import org.solovyev.common.msg.MessageType;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/AndroidFunctionCategory.java b/android-app/src/main/java/org/solovyev/android/calculator/AndroidFunctionCategory.java
index ef1ef2b2..8bf13ae2 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/AndroidFunctionCategory.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/AndroidFunctionCategory.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/AndroidNumeralBase.java b/android-app/src/main/java/org/solovyev/android/calculator/AndroidNumeralBase.java
index 919a87cd..0677a7a0 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/AndroidNumeralBase.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/AndroidNumeralBase.java
@@ -1,8 +1,32 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.app.Activity;
 import jscl.NumeralBase;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.units.CalculatorNumeralBase;
 import org.solovyev.android.view.drag.DirectionDragButton;
 import org.solovyev.android.view.drag.DragDirection;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/AndroidOperatorCategory.java b/android-app/src/main/java/org/solovyev/android/calculator/AndroidOperatorCategory.java
index 4a111950..ff218bc8 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/AndroidOperatorCategory.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/AndroidOperatorCategory.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/AndroidVarCategory.java b/android-app/src/main/java/org/solovyev/android/calculator/AndroidVarCategory.java
index d163cbc2..939c8c25 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/AndroidVarCategory.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/AndroidVarCategory.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivity.java b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivity.java
index cf57c14f..0210cde1 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivity.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivity.java
@@ -1,6 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
@@ -23,8 +40,10 @@ import android.view.ViewConfiguration;
 import android.view.Window;
 import android.widget.Button;
 import android.widget.TextView;
+
 import com.actionbarsherlock.app.ActionBar;
 import com.actionbarsherlock.app.SherlockFragmentActivity;
+
 import org.solovyev.android.Activities;
 import org.solovyev.android.Android;
 import org.solovyev.android.Threads;
@@ -136,7 +155,7 @@ public class CalculatorActivity extends SherlockFragmentActivity implements Shar
 		if (!CalculatorApplication.isMonkeyRunner(context)) {
 
 			boolean dialogShown = false;
-			if(isWizardStarted(FIRST_TIME_WIZARD) && !isWizardFinished(FIRST_TIME_WIZARD)) {
+			if (isWizardStarted(FIRST_TIME_WIZARD) && !isWizardFinished(FIRST_TIME_WIZARD)) {
 				CalculatorWizardActivity.continueWizard(FIRST_TIME_WIZARD, context);
 				dialogShown = true;
 			} else {
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivityHelper.java b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivityHelper.java
index d6257aec..fcde5e68 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivityHelper.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivityHelper.java
@@ -1,10 +1,34 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.app.Activity;
 import android.os.Bundle;
 import android.support.v4.app.Fragment;
 import android.view.View;
+
 import com.actionbarsherlock.app.SherlockFragmentActivity;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivityHelperImpl.java b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivityHelperImpl.java
index 4e9491b2..0b567a40 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivityHelperImpl.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivityHelperImpl.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.app.Activity;
@@ -14,10 +36,13 @@ import android.util.Log;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.TextView;
+
 import com.actionbarsherlock.app.ActionBar;
 import com.actionbarsherlock.app.SherlockFragmentActivity;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.Activities;
 import org.solovyev.android.Views;
 import org.solovyev.android.sherlock.tabs.ActionBarFragmentTabListener;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivityLauncher.java b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivityLauncher.java
index b299adb2..e2487770 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivityLauncher.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivityLauncher.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.app.Activity;
@@ -10,8 +32,11 @@ import android.preference.PreferenceManager;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.widget.TextView;
+
 import com.actionbarsherlock.app.SherlockFragmentActivity;
+
 import jscl.math.Generic;
+
 import org.solovyev.android.Android;
 import org.solovyev.android.App;
 import org.solovyev.android.calculator.about.CalculatorAboutActivity;
@@ -29,6 +54,7 @@ import org.solovyev.common.text.Strings;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import java.util.List;
 
 /**
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivityMobile.java b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivityMobile.java
index 73f1aebd..8d223d5e 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivityMobile.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivityMobile.java
@@ -1,8 +1,31 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
+
 import javax.annotation.Nullable;
 
 /**
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorApplication.java b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorApplication.java
index 825becc1..4ab452c7 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorApplication.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorApplication.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.content.Context;
@@ -9,10 +31,13 @@ import android.util.Log;
 import net.robotmedia.billing.BillingController;
 import net.robotmedia.billing.helper.DefaultBillingObserver;
 import net.robotmedia.billing.model.BillingDB;
+
 import org.acra.ACRA;
 import org.acra.ReportingInteractionMode;
 import org.acra.annotation.ReportsCrashes;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.Android;
 import org.solovyev.android.App;
 import org.solovyev.android.ServiceLocator;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorDialogActivity.java b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorDialogActivity.java
index 8b3a857b..30190288 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorDialogActivity.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorDialogActivity.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.content.Context;
@@ -8,9 +30,12 @@ import android.text.method.ScrollingMovementMethod;
 import android.view.View;
 import android.widget.Button;
 import android.widget.TextView;
+
 import com.actionbarsherlock.app.SherlockFragmentActivity;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.Android;
 import org.solovyev.android.fragments.FragmentUtils;
 import org.solovyev.common.msg.MessageType;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorDisplayFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorDisplayFragment.java
index 285fc444..18ccab8a 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorDisplayFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorDisplayFragment.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.content.SharedPreferences;
@@ -6,7 +28,9 @@ import android.preference.PreferenceManager;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+
 import com.actionbarsherlock.app.SherlockFragment;
+
 import javax.annotation.Nonnull;
 
 /**
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorEditorFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorEditorFragment.java
index b2afa350..7804baf4 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorEditorFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorEditorFragment.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.app.Activity;
@@ -7,11 +29,14 @@ import android.preference.PreferenceManager;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+
 import com.actionbarsherlock.app.SherlockFragment;
 import com.actionbarsherlock.view.Menu;
 import com.actionbarsherlock.view.MenuInflater;
 import com.actionbarsherlock.view.MenuItem;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.menu.ActivityMenu;
 import org.solovyev.android.menu.ListActivityMenu;
 import org.solovyev.android.sherlock.menu.SherlockMenuHelper;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorFragment.java
index e9cf5096..51e46ea0 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorFragment.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.app.Activity;
@@ -5,7 +27,9 @@ import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+
 import com.actionbarsherlock.app.SherlockFragment;
+
 import javax.annotation.Nonnull;
 
 /**
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorFragmentActivity.java b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorFragmentActivity.java
index c9315153..77d61696 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorFragmentActivity.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorFragmentActivity.java
@@ -1,7 +1,31 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.os.Bundle;
+
 import com.actionbarsherlock.app.SherlockFragmentActivity;
+
 import javax.annotation.Nonnull;
 
 /**
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorFragmentHelper.java b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorFragmentHelper.java
index 6ffa92b1..dc5b8044 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorFragmentHelper.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorFragmentHelper.java
@@ -1,9 +1,32 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.support.v4.app.Fragment;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorFragmentHelperImpl.java b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorFragmentHelperImpl.java
index ff9c3a2f..addf70bd 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorFragmentHelperImpl.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorFragmentHelperImpl.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.support.v4.app.Fragment;
@@ -5,9 +27,12 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.TextView;
+
 import com.google.ads.AdView;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.ads.AdsController;
 
 /**
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorFragmentType.java b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorFragmentType.java
index cc02ba3e..67c11dd2 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorFragmentType.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorFragmentType.java
@@ -1,7 +1,31 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.support.v4.app.Fragment;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.about.CalculatorAboutFragment;
 import org.solovyev.android.calculator.about.CalculatorReleaseNotesFragment;
 import org.solovyev.android.calculator.help.CalculatorHelpFaqFragment;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorKeyboardFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorKeyboardFragment.java
index 2434e664..7b66f0a2 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorKeyboardFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorKeyboardFragment.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.content.SharedPreferences;
@@ -6,9 +28,12 @@ import android.preference.PreferenceManager;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+
 import com.actionbarsherlock.app.SherlockFragment;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.model.AndroidCalculatorEngine;
 
 /**
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorListFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorListFragment.java
index 99a40e46..731bc456 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorListFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorListFragment.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.app.Activity;
@@ -5,7 +27,9 @@ import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+
 import com.actionbarsherlock.app.SherlockListFragment;
+
 import javax.annotation.Nonnull;
 
 /**
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorMenu.java b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorMenu.java
index 396de494..a8936f42 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorMenu.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorMenu.java
@@ -1,10 +1,35 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.app.Activity;
 import android.content.Context;
 import android.util.Log;
+
 import com.actionbarsherlock.view.MenuItem;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.view.NumeralBaseConverterDialog;
 import org.solovyev.android.menu.LabeledMenuItem;
 
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorSecurity.java b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorSecurity.java
index 0e3d24b2..66586b36 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorSecurity.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorSecurity.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2012. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorWikiActivity.java b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorWikiActivity.java
index 00354a50..8cdbbe2b 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorWikiActivity.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorWikiActivity.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.os.Bundle;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CharacterAtPositionFinder.java b/android-app/src/main/java/org/solovyev/android/calculator/CharacterAtPositionFinder.java
index e2bcb8aa..3fff7145 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CharacterAtPositionFinder.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CharacterAtPositionFinder.java
@@ -1,13 +1,30 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.common.JPredicate;
 
 /**
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CursorDragProcessor.java b/android-app/src/main/java/org/solovyev/android/calculator/CursorDragProcessor.java
index 4541db54..65a3320b 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CursorDragProcessor.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CursorDragProcessor.java
@@ -1,12 +1,31 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
 
 import android.view.MotionEvent;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.view.drag.DirectionDragButton;
 import org.solovyev.android.view.drag.DragButton;
 import org.solovyev.android.view.drag.DragDirection;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/EqualsDragProcessor.java b/android-app/src/main/java/org/solovyev/android/calculator/EqualsDragProcessor.java
index 8e0bb850..041be069 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/EqualsDragProcessor.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/EqualsDragProcessor.java
@@ -1,13 +1,31 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
 
 import android.view.MotionEvent;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.view.drag.DirectionDragButton;
 import org.solovyev.android.view.drag.DragButton;
 import org.solovyev.android.view.drag.DragDirection;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/NumeralBaseButtons.java b/android-app/src/main/java/org/solovyev/android/calculator/NumeralBaseButtons.java
index 0f7d702e..2abbbcf1 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/NumeralBaseButtons.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/NumeralBaseButtons.java
@@ -1,9 +1,33 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.app.Activity;
 import android.content.SharedPreferences;
 import jscl.NumeralBase;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.model.AndroidCalculatorEngine;
 
 /**
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/about/CalculatorAboutActivity.java b/android-app/src/main/java/org/solovyev/android/calculator/about/CalculatorAboutActivity.java
index 0a8acec3..270d6003 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/about/CalculatorAboutActivity.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/about/CalculatorAboutActivity.java
@@ -1,12 +1,31 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.about;
 
 import android.os.Bundle;
+
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.CalculatorFragmentActivity;
 import org.solovyev.android.calculator.CalculatorFragmentType;
 import org.solovyev.android.calculator.R;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/about/CalculatorAboutFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/about/CalculatorAboutFragment.java
index fc027895..cd8ccc07 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/about/CalculatorAboutFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/about/CalculatorAboutFragment.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.about;
@@ -10,6 +26,7 @@ import android.os.Bundle;
 import android.text.method.LinkMovementMethod;
 import android.view.View;
 import android.widget.TextView;
+
 import org.solovyev.android.calculator.CalculatorFragment;
 import org.solovyev.android.calculator.CalculatorFragmentType;
 import org.solovyev.android.calculator.R;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/about/CalculatorReleaseNotesFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/about/CalculatorReleaseNotesFragment.java
index d9603a6c..dcd8aaf2 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/about/CalculatorReleaseNotesFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/about/CalculatorReleaseNotesFragment.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.about;
@@ -12,7 +28,9 @@ import android.text.Html;
 import android.text.method.LinkMovementMethod;
 import android.view.View;
 import android.widget.TextView;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.Android;
 import org.solovyev.android.calculator.CalculatorApplication;
 import org.solovyev.android.calculator.CalculatorFragment;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/about/TextHelper.java b/android-app/src/main/java/org/solovyev/android/calculator/about/TextHelper.java
index f9489d6e..97d2bbcf 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/about/TextHelper.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/about/TextHelper.java
@@ -1,6 +1,29 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.about;
 
 import android.content.res.Resources;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/function/FunctionEditDialogFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/function/FunctionEditDialogFragment.java
index 2b5e100b..ba8ec531 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/function/FunctionEditDialogFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/function/FunctionEditDialogFragment.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.function;
 
 import android.content.Context;
@@ -11,14 +33,18 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.EditText;
+
 import com.actionbarsherlock.app.SherlockFragmentActivity;
+
 import jscl.math.Generic;
 import jscl.math.function.Constant;
 import jscl.math.function.CustomFunction;
 import jscl.math.function.Function;
 import jscl.math.function.IFunction;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.*;
 import org.solovyev.android.calculator.math.edit.CalculatorFunctionsActivity;
 import org.solovyev.android.calculator.math.edit.CalculatorFunctionsFragment;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/function/FunctionEditorSaver.java b/android-app/src/main/java/org/solovyev/android/calculator/function/FunctionEditorSaver.java
index 889c4ac9..1e0464cf 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/function/FunctionEditorSaver.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/function/FunctionEditorSaver.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.function;
 
 import android.view.View;
@@ -5,8 +27,10 @@ import android.widget.EditText;
 import jscl.CustomFunctionCalculationException;
 import jscl.math.function.Function;
 import jscl.math.function.IFunction;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.CalculatorFunctionsMathRegistry;
 import org.solovyev.android.calculator.CalculatorMathRegistry;
 import org.solovyev.android.calculator.Locator;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/function/FunctionParamEditText.java b/android-app/src/main/java/org/solovyev/android/calculator/function/FunctionParamEditText.java
index ab6a41a8..7e27222c 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/function/FunctionParamEditText.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/function/FunctionParamEditText.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.function;
 
 import android.content.Context;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/function/FunctionParamsView.java b/android-app/src/main/java/org/solovyev/android/calculator/function/FunctionParamsView.java
index b9d8d6f9..79db19f6 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/function/FunctionParamsView.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/function/FunctionParamsView.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.function;
 
 import android.content.Context;
@@ -9,8 +31,10 @@ import android.widget.EditText;
 import android.widget.LinearLayout;
 import android.widget.TextView;
 import jscl.text.MutableInt;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.R;
 
 import java.util.ArrayList;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/help/CalculatorHelpActivity.java b/android-app/src/main/java/org/solovyev/android/calculator/help/CalculatorHelpActivity.java
index 8e91f062..d6bfc823 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/help/CalculatorHelpActivity.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/help/CalculatorHelpActivity.java
@@ -1,13 +1,31 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.help;
 
 import android.os.Bundle;
+
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.CalculatorFragmentActivity;
 import org.solovyev.android.calculator.CalculatorFragmentType;
 import org.solovyev.android.calculator.R;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/help/CalculatorHelpFaqFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/help/CalculatorHelpFaqFragment.java
index ba5a87a8..bbdeb373 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/help/CalculatorHelpFaqFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/help/CalculatorHelpFaqFragment.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.help;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/help/CalculatorHelpHintsFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/help/CalculatorHelpHintsFragment.java
index 5e130cc2..90d01b77 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/help/CalculatorHelpHintsFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/help/CalculatorHelpHintsFragment.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.help;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/help/CalculatorHelpScreensFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/help/CalculatorHelpScreensFragment.java
index 52e34479..d75b8eb2 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/help/CalculatorHelpScreensFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/help/CalculatorHelpScreensFragment.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.help;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/history/AbstractCalculatorHistoryFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/history/AbstractCalculatorHistoryFragment.java
index 5eb27fd8..13d6d320 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/history/AbstractCalculatorHistoryFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/history/AbstractCalculatorHistoryFragment.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.history;
@@ -19,10 +35,12 @@ import android.view.ViewGroup;
 import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
 import android.widget.ListView;
+
 import com.actionbarsherlock.app.SherlockListFragment;
 import com.actionbarsherlock.view.Menu;
 import com.actionbarsherlock.view.MenuInflater;
 import com.actionbarsherlock.view.MenuItem;
+
 import org.solovyev.android.calculator.*;
 import org.solovyev.android.calculator.R;
 import org.solovyev.android.calculator.jscl.JsclOperation;
@@ -37,6 +55,7 @@ import org.solovyev.common.text.Strings;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.List;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/history/AndroidCalculatorHistory.java b/android-app/src/main/java/org/solovyev/android/calculator/history/AndroidCalculatorHistory.java
index 5debb927..24733ca3 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/history/AndroidCalculatorHistory.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/history/AndroidCalculatorHistory.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.history;
@@ -10,8 +26,10 @@ import android.app.Application;
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.preference.PreferenceManager;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.Calculator;
 import org.solovyev.android.calculator.CalculatorEventData;
 import org.solovyev.android.calculator.CalculatorEventType;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryActivity.java b/android-app/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryActivity.java
index 798b8566..3c6da3bb 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryActivity.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryActivity.java
@@ -1,15 +1,34 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.history;
 
 import android.os.Bundle;
+
 import com.actionbarsherlock.app.SherlockFragmentActivity;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.*;
 
 import static org.solovyev.android.calculator.CalculatorFragmentType.history;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryFragment.java
index dce4e7fc..00138ae0 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryFragment.java
@@ -1,19 +1,37 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.history;
 
 import android.content.SharedPreferences;
 import android.preference.PreferenceManager;
+
 import org.solovyev.android.calculator.CalculatorFragmentType;
 import org.solovyev.android.calculator.CalculatorPreferences;
 import org.solovyev.android.calculator.Locator;
 import org.solovyev.android.calculator.R;
 
 import javax.annotation.Nonnull;
+
 import java.util.ArrayList;
 import java.util.List;
 
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/history/CalculatorSavedHistoryFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/history/CalculatorSavedHistoryFragment.java
index 37ad35bc..5aa7abae 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/history/CalculatorSavedHistoryFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/history/CalculatorSavedHistoryFragment.java
@@ -1,12 +1,29 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.history;
 
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.CalculatorFragmentType;
 import org.solovyev.android.calculator.Locator;
 import org.solovyev.android.calculator.R;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/history/HistoryArrayAdapter.java b/android-app/src/main/java/org/solovyev/android/calculator/history/HistoryArrayAdapter.java
index 7cf5215a..7b167b27 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/history/HistoryArrayAdapter.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/history/HistoryArrayAdapter.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.history;
@@ -12,10 +28,12 @@ import android.view.ViewGroup;
 import android.widget.ArrayAdapter;
 import android.widget.ImageView;
 import android.widget.TextView;
+
 import org.solovyev.android.calculator.R;
 import org.solovyev.common.text.Strings;
 
 import javax.annotation.Nonnull;
+
 import java.text.SimpleDateFormat;
 import java.util.Date;
 import java.util.List;
@@ -79,7 +97,7 @@ public class HistoryArrayAdapter extends ArrayAdapter<CalculatorHistoryState> {
 					@Override
 					public void onClick(View view) {
 						final Context context = getContext();
-						if(context instanceof CalculatorHistoryActivity) {
+						if (context instanceof CalculatorHistoryActivity) {
 							final CalculatorHistoryActivity activity = (CalculatorHistoryActivity) context;
 							activity.getActivityHelper().selectTab(activity, saved_history);
 						}
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/history/HistoryItemMenuData.java b/android-app/src/main/java/org/solovyev/android/calculator/history/HistoryItemMenuData.java
index 1a68884a..a17d9972 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/history/HistoryItemMenuData.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/history/HistoryItemMenuData.java
@@ -1,12 +1,29 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.history;
 
 import android.widget.ArrayAdapter;
+
 import javax.annotation.Nonnull;
 
 /**
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/history/HistoryItemMenuItem.java b/android-app/src/main/java/org/solovyev/android/calculator/history/HistoryItemMenuItem.java
index 5ff289e0..4cf39e0a 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/history/HistoryItemMenuItem.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/history/HistoryItemMenuItem.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.history;
@@ -16,7 +32,9 @@ import android.view.View;
 import android.widget.EditText;
 import android.widget.TextView;
 import android.widget.Toast;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.Locator;
 import org.solovyev.android.calculator.R;
 import org.solovyev.android.menu.LabeledMenuItem;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/history/TextViewEditorAdapter.java b/android-app/src/main/java/org/solovyev/android/calculator/history/TextViewEditorAdapter.java
index 697151e8..7317aee7 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/history/TextViewEditorAdapter.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/history/TextViewEditorAdapter.java
@@ -1,15 +1,33 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.history;
 
 import android.widget.EditText;
 import android.widget.TextView;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.Editor;
 
 /**
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/math/edit/AbstractMathEntityListFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/math/edit/AbstractMathEntityListFragment.java
index c0864974..5d15a066 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/math/edit/AbstractMathEntityListFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/math/edit/AbstractMathEntityListFragment.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.math.edit;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorFunctionsActivity.java b/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorFunctionsActivity.java
index c7654b45..c0250c27 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorFunctionsActivity.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorFunctionsActivity.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.math.edit;
@@ -9,9 +25,12 @@ package org.solovyev.android.calculator.math.edit;
 import android.content.Intent;
 import android.os.Bundle;
 import android.util.Log;
+
 import com.actionbarsherlock.app.SherlockFragmentActivity;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.*;
 import org.solovyev.android.calculator.history.CalculatorHistoryActivity;
 
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorFunctionsFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorFunctionsFragment.java
index 2ba05719..a6f5dd44 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorFunctionsFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorFunctionsFragment.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.math.edit;
@@ -11,14 +27,18 @@ import android.content.Context;
 import android.os.Bundle;
 import android.os.Parcelable;
 import android.text.ClipboardManager;
+
 import com.actionbarsherlock.app.SherlockFragmentActivity;
 import com.actionbarsherlock.view.Menu;
 import com.actionbarsherlock.view.MenuInflater;
 import com.actionbarsherlock.view.MenuItem;
+
 import jscl.math.function.Function;
 import jscl.math.function.IFunction;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.*;
 import org.solovyev.android.calculator.function.FunctionEditDialogFragment;
 import org.solovyev.android.menu.AMenuItem;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorOperatorsActivity.java b/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorOperatorsActivity.java
index 29c9629c..13594ff5 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorOperatorsActivity.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorOperatorsActivity.java
@@ -1,15 +1,34 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.math.edit;
 
 import android.os.Bundle;
+
 import com.actionbarsherlock.app.SherlockFragmentActivity;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.*;
 import org.solovyev.android.calculator.history.CalculatorHistoryActivity;
 
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorOperatorsFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorOperatorsFragment.java
index a4c563c5..b8a76fe1 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorOperatorsFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorOperatorsFragment.java
@@ -1,10 +1,34 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.math.edit;
 
 import android.app.Activity;
 import android.content.Context;
 import android.text.ClipboardManager;
 import jscl.math.operator.Operator;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.CalculatorEventType;
 import org.solovyev.android.calculator.CalculatorFragmentType;
 import org.solovyev.android.calculator.Locator;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorVarsActivity.java b/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorVarsActivity.java
index 78bdb506..f535373d 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorVarsActivity.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorVarsActivity.java
@@ -1,16 +1,35 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.math.edit;
 
 import android.content.Intent;
 import android.os.Bundle;
+
 import com.actionbarsherlock.app.SherlockFragmentActivity;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.*;
 import org.solovyev.android.calculator.history.CalculatorHistoryActivity;
 
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorVarsFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorVarsFragment.java
index d5fdba1d..82f289a2 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorVarsFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorVarsFragment.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.math.edit;
@@ -9,13 +25,17 @@ package org.solovyev.android.calculator.math.edit;
 import android.content.Context;
 import android.os.Bundle;
 import android.view.View;
+
 import com.actionbarsherlock.app.SherlockFragmentActivity;
 import com.actionbarsherlock.view.Menu;
 import com.actionbarsherlock.view.MenuInflater;
 import com.actionbarsherlock.view.MenuItem;
+
 import jscl.math.function.IConstant;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.*;
 import org.solovyev.android.calculator.math.MathType;
 import org.solovyev.android.menu.AMenuItem;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/math/edit/MathEntityRemover.java b/android-app/src/main/java/org/solovyev/android/calculator/math/edit/MathEntityRemover.java
index 96a6cdf7..2d71ec8c 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/math/edit/MathEntityRemover.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/math/edit/MathEntityRemover.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.math.edit;
@@ -13,8 +29,10 @@ import android.view.View;
 import android.widget.TextView;
 import jscl.math.function.Function;
 import jscl.math.function.IConstant;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.CalculatorEventType;
 import org.solovyev.android.calculator.CalculatorMathRegistry;
 import org.solovyev.android.calculator.Locator;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/math/edit/VarEditDialogFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/math/edit/VarEditDialogFragment.java
index 8b9278c3..b01d9fd9 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/math/edit/VarEditDialogFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/math/edit/VarEditDialogFragment.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.math.edit;
 
 import android.os.Bundle;
@@ -12,8 +34,10 @@ import android.view.WindowManager;
 import android.widget.EditText;
 import android.widget.Toast;
 import jscl.math.function.IConstant;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.*;
 import org.solovyev.android.calculator.model.Var;
 import org.solovyev.android.sherlock.AndroidSherlockUtils;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/math/edit/VarEditorSaver.java b/android-app/src/main/java/org/solovyev/android/calculator/math/edit/VarEditorSaver.java
index 3517d4af..64be5df9 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/math/edit/VarEditorSaver.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/math/edit/VarEditorSaver.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.math.edit;
@@ -12,8 +28,10 @@ import jscl.text.Identifier;
 import jscl.text.MutableInt;
 import jscl.text.ParseException;
 import jscl.text.Parser;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.CalculatorMathRegistry;
 import org.solovyev.android.calculator.CalculatorVarsRegistry;
 import org.solovyev.android.calculator.Locator;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/matrix/CalculatorMatrixActivity.java b/android-app/src/main/java/org/solovyev/android/calculator/matrix/CalculatorMatrixActivity.java
index ed68b219..ad8f91da 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/matrix/CalculatorMatrixActivity.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/matrix/CalculatorMatrixActivity.java
@@ -1,6 +1,29 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.matrix;
 
 import android.os.Bundle;
+
 import org.solovyev.android.calculator.CalculatorFragmentActivity;
 import org.solovyev.android.calculator.CalculatorFragmentType;
 import org.solovyev.android.calculator.R;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/matrix/CalculatorMatrixEditFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/matrix/CalculatorMatrixEditFragment.java
index 8d9432b4..b7e5cde4 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/matrix/CalculatorMatrixEditFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/matrix/CalculatorMatrixEditFragment.java
@@ -1,9 +1,33 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.matrix;
 
 import android.os.Bundle;
 import android.view.View;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.CalculatorFragment;
 import org.solovyev.android.calculator.CalculatorFragmentType;
 import org.solovyev.android.calculator.R;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/matrix/MatrixView.java b/android-app/src/main/java/org/solovyev/android/calculator/matrix/MatrixView.java
index 9cb75610..10cfa4e8 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/matrix/MatrixView.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/matrix/MatrixView.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.matrix;
 
 import android.content.Context;
@@ -8,6 +30,7 @@ import android.widget.EditText;
 import android.widget.TableLayout;
 import android.widget.TableRow;
 import android.widget.TextView;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/AbstractCalculatorPlotFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/AbstractCalculatorPlotFragment.java
index 359a4170..b0a8a5bb 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/AbstractCalculatorPlotFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/AbstractCalculatorPlotFragment.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import android.content.Context;
@@ -11,10 +33,12 @@ import android.os.Environment;
 import android.preference.PreferenceManager;
 import android.support.v4.app.FragmentActivity;
 import android.view.View;
+
 import com.actionbarsherlock.app.SherlockFragmentActivity;
 import com.actionbarsherlock.view.Menu;
 import com.actionbarsherlock.view.MenuInflater;
 import com.actionbarsherlock.view.MenuItem;
+
 import org.solovyev.android.Android;
 import org.solovyev.android.Threads;
 import org.solovyev.android.calculator.*;
@@ -28,6 +52,7 @@ import org.solovyev.common.msg.MessageType;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import java.io.File;
 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
@@ -341,7 +366,7 @@ public abstract class AbstractCalculatorPlotFragment extends CalculatorFragment
 	}
 
 	private String getPicturesDirectory() {
-		if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.FROYO) {
+		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.FROYO) {
 			return Environment.DIRECTORY_PICTURES;
 		} else {
 			return "Pictures";
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/AbstractGraphCalculator.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/AbstractGraphCalculator.java
index 2fdf934b..82482ded 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/AbstractGraphCalculator.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/AbstractGraphCalculator.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import javax.annotation.Nonnull;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorGraph2dView.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorGraph2dView.java
index 698e2c5c..56587fc6 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorGraph2dView.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorGraph2dView.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 
@@ -8,9 +30,11 @@ import android.view.MotionEvent;
 import android.view.View;
 import android.widget.Scroller;
 import android.widget.ZoomButtonsController;
+
 import org.solovyev.common.math.Point2d;
 
 import javax.annotation.Nonnull;
+
 import java.text.DecimalFormat;
 import java.util.Collections;
 import java.util.List;
@@ -240,7 +264,7 @@ public class CalculatorGraph2dView extends View implements GraphView {
 	private void drawGraph(@Nonnull Canvas canvas) {
 		drawn = true;
 
-		if(adjustYAxis) {
+		if (adjustYAxis) {
 			adjustYAxis();
 			adjustYAxis = false;
 		}
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorGraph3dView.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorGraph3dView.java
index c253b47d..7e22aef0 100755
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorGraph3dView.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorGraph3dView.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import android.content.Context;
@@ -7,10 +29,12 @@ import android.os.Build;
 import android.util.AttributeSet;
 import android.view.MotionEvent;
 import android.widget.ZoomButtonsController;
+
 import javax.annotation.Nonnull;
 
 import javax.microedition.khronos.opengles.GL10;
 import javax.microedition.khronos.opengles.GL11;
+
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
@@ -249,7 +273,7 @@ public class CalculatorGraph3dView extends GLView implements GraphView {
 		}
 
     	/*if (fps.incFrame()) {
-            Calculator.log("f/s " + fps.getValue());
+			Calculator.log("f/s " + fps.getValue());
         }*/
 
 		gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotActivity.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotActivity.java
index 23bad669..f2c5a602 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotActivity.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotActivity.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import android.content.Intent;
 import android.os.Bundle;
+
 import org.solovyev.android.calculator.CalculatorFragmentActivity;
 import org.solovyev.android.calculator.CalculatorFragmentType;
 import org.solovyev.android.calculator.R;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotFragment.java
index ac12e225..24c7ad6b 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotFragment.java
@@ -1,9 +1,32 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import android.graphics.Bitmap;
 import android.graphics.Color;
 import android.view.View;
 import android.view.ViewGroup;
+
 import org.solovyev.android.calculator.R;
 
 import javax.annotation.Nonnull;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotFunctionSettingsActivity.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotFunctionSettingsActivity.java
index 8de69bef..304e2a46 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotFunctionSettingsActivity.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotFunctionSettingsActivity.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import android.app.Activity;
@@ -10,9 +32,12 @@ import android.view.ViewGroup;
 import android.widget.Button;
 import android.widget.SeekBar;
 import android.widget.Spinner;
+
 import com.actionbarsherlock.app.SherlockFragmentActivity;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.CalculatorFragment;
 import org.solovyev.android.calculator.CalculatorFragmentType;
 import org.solovyev.android.calculator.Locator;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotFunctionsActivity.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotFunctionsActivity.java
index 4590ef6f..ed29cd5e 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotFunctionsActivity.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotFunctionsActivity.java
@@ -1,10 +1,35 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import android.os.Bundle;
+
 import com.actionbarsherlock.app.SherlockFragmentActivity;
 import com.google.common.base.Function;
 import com.google.common.collect.Lists;
+
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.CalculatorFragmentType;
 import org.solovyev.android.calculator.CalculatorListFragment;
 import org.solovyev.android.calculator.Locator;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotPreferenceActivity.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotPreferenceActivity.java
index 4d41a36f..ced327d3 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotPreferenceActivity.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotPreferenceActivity.java
@@ -1,7 +1,31 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import android.os.Bundle;
+
 import com.actionbarsherlock.app.SherlockPreferenceActivity;
+
 import org.solovyev.android.calculator.R;
 
 /**
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotRangeActivity.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotRangeActivity.java
index d4793af5..9ab3bf65 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotRangeActivity.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotRangeActivity.java
@@ -1,11 +1,36 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import android.os.Bundle;
 import android.view.View;
 import android.widget.EditText;
+
 import com.actionbarsherlock.app.SherlockFragmentActivity;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.CalculatorFragment;
 import org.solovyev.android.calculator.CalculatorFragmentType;
 import org.solovyev.android.calculator.Locator;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/FPS.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/FPS.java
index ef6fe8be..74365fa4 100755
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/FPS.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/FPS.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 class FPS {
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/GLText.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/GLText.java
index 54aea2a5..0922beda 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/GLText.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/GLText.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 // This is a OpenGL ES 1.0 dynamic font rendering system. It loads actual font
 // files, generates a font map (texture) from them, and allows rendering of
 // text strings.
@@ -21,55 +43,55 @@ import javax.microedition.khronos.opengles.GL10;
 public class GLText {
 
 	//--Constants--//
-	public final static int CHAR_START = 32;       	// First Character (ASCII Code)
-	public final static int CHAR_END = 126;        	// Last Character (ASCII Code)
+	public final static int CHAR_START = 32;        // First Character (ASCII Code)
+	public final static int CHAR_END = 126;            // Last Character (ASCII Code)
 	public final static int CHAR_CNT = (((CHAR_END - CHAR_START) + 1) + 1);  // Character Count (Including Character to use for Unknown)
 
-	public final static int CHAR_NONE = 32;        	// Character to Use for Unknown (ASCII Code)
+	public final static int CHAR_NONE = 32;            // Character to Use for Unknown (ASCII Code)
 	public final static int CHAR_UNKNOWN = (CHAR_CNT - 1);  // Index of the Unknown Character
 
-	public final static int FONT_SIZE_MIN = 6;     	// Minumum Font Size (Pixels)
-	public final static int FONT_SIZE_MAX = 180;   	// Maximum Font Size (Pixels)
+	public final static int FONT_SIZE_MIN = 6;        // Minumum Font Size (Pixels)
+	public final static int FONT_SIZE_MAX = 180;    // Maximum Font Size (Pixels)
 
-	public final static int CHAR_BATCH_SIZE = 100; 	// Number of Characters to Render Per Batch
+	public final static int CHAR_BATCH_SIZE = 100;    // Number of Characters to Render Per Batch
 
 	//--Members--//
-	GL10 gl;                                       	// GL10 Instance
-	AssetManager assets;                           	// Asset Manager
-	SpriteBatch batch;                             	// Batch Renderer
+	GL10 gl;                                        // GL10 Instance
+	AssetManager assets;                            // Asset Manager
+	SpriteBatch batch;                                // Batch Renderer
 
-	int fontPadX, fontPadY;                        	// Font Padding (Pixels; On Each Side, ie. Doubled on Both X+Y Axis)
+	int fontPadX, fontPadY;                            // Font Padding (Pixels; On Each Side, ie. Doubled on Both X+Y Axis)
 
-	float fontHeight;                              	// Font Height (Actual; Pixels)
-	float fontAscent;                              	// Font Ascent (Above Baseline; Pixels)
-	float fontDescent;                             	// Font Descent (Below Baseline; Pixels)
+	float fontHeight;                                // Font Height (Actual; Pixels)
+	float fontAscent;                                // Font Ascent (Above Baseline; Pixels)
+	float fontDescent;                                // Font Descent (Below Baseline; Pixels)
 
-	int textureId;                                 	// Font Texture ID [NOTE: Public for Testing Purposes Only!]
-	int textureSize;                               	// Texture Size for Font (Square) [NOTE: Public for Testing Purposes Only!]
-	TextureRegion textureRgn;                      	// Full Texture Region
+	int textureId;                                    // Font Texture ID [NOTE: Public for Testing Purposes Only!]
+	int textureSize;                                // Texture Size for Font (Square) [NOTE: Public for Testing Purposes Only!]
+	TextureRegion textureRgn;                        // Full Texture Region
 
-	float charWidthMax;                            	// Character Width (Maximum; Pixels)
-	float charHeight;                              	// Character Height (Maximum; Pixels)
-	final float[] charWidths;                      	// Width of Each Character (Actual; Pixels)
-	TextureRegion[] charRgn;                       	// Region of Each Character (Texture Coordinates)
-	int cellWidth, cellHeight;                     	// Character Cell Width/Height
-	int rowCnt, colCnt;                            	// Number of Rows/Columns
+	float charWidthMax;                                // Character Width (Maximum; Pixels)
+	float charHeight;                                // Character Height (Maximum; Pixels)
+	final float[] charWidths;                        // Width of Each Character (Actual; Pixels)
+	TextureRegion[] charRgn;                        // Region of Each Character (Texture Coordinates)
+	int cellWidth, cellHeight;                        // Character Cell Width/Height
+	int rowCnt, colCnt;                                // Number of Rows/Columns
 
-	float scaleX, scaleY;                          	// Font Scale (X,Y Axis)
-	float spaceX;                                  	// Additional (X,Y Axis) Spacing (Unscaled)
+	float scaleX, scaleY;                            // Font Scale (X,Y Axis)
+	float spaceX;                                    // Additional (X,Y Axis) Spacing (Unscaled)
 
 
 	//--Constructor--//
 	// D: save GL instance + asset manager, create arrays, and initialize the members
 	// A: gl - OpenGL ES 10 Instance
 	public GLText(GL10 gl, AssetManager assets) {
-		this.gl = gl;                               	// Save the GL10 Instance
-		this.assets = assets;                       	// Save the Asset Manager Instance
+		this.gl = gl;                                // Save the GL10 Instance
+		this.assets = assets;                        // Save the Asset Manager Instance
 
 		batch = new SpriteBatch(gl, CHAR_BATCH_SIZE);  // Create Sprite Batch (with Defined Size)
 
-		charWidths = new float[CHAR_CNT];           	// Create the Array of Character Widths
-		charRgn = new TextureRegion[CHAR_CNT];      	// Create the Array of Character Regions
+		charWidths = new float[CHAR_CNT];            // Create the Array of Character Widths
+		charRgn = new TextureRegion[CHAR_CNT];        // Create the Array of Character Regions
 
 		// initialize remaining members
 		fontPadX = 0;
@@ -90,8 +112,8 @@ public class GLText {
 		rowCnt = 0;
 		colCnt = 0;
 
-		scaleX = 1.0f;                              	// Default Scale = 1 (Unscaled)
-		scaleY = 1.0f;                              	// Default Scale = 1 (Unscaled)
+		scaleX = 1.0f;                                // Default Scale = 1 (Unscaled)
+		scaleY = 1.0f;                                // Default Scale = 1 (Unscaled)
 		spaceX = 0.0f;
 	}
 
@@ -106,16 +128,16 @@ public class GLText {
 	public boolean load(String file, int size, int padX, int padY) {
 
 		// setup requested values
-		fontPadX = padX;                            	// Set Requested X Axis Padding
-		fontPadY = padY;                            	// Set Requested Y Axis Padding
+		fontPadX = padX;                                // Set Requested X Axis Padding
+		fontPadY = padY;                                // Set Requested Y Axis Padding
 
 		// load the font and setup paint instance for drawing
 		Typeface tf = Typeface.createFromAsset(assets, file);  // Create the Typeface from Font File
-		Paint paint = new Paint();                  	// Create Android Paint Instance
-		paint.setAntiAlias(true);                 	// Enable Anti Alias
-		paint.setTextSize(size);                  	// Set Text Size
-		paint.setColor(0xffffffff);               	// Set ARGB (White, Opaque)
-		paint.setTypeface(tf);                    	// Set Typeface
+		Paint paint = new Paint();                    // Create Android Paint Instance
+		paint.setAntiAlias(true);                    // Enable Anti Alias
+		paint.setTextSize(size);                    // Set Text Size
+		paint.setColor(0xffffffff);                // Set ARGB (White, Opaque)
+		paint.setTypeface(tf);                        // Set Typeface
 
 		// get font metrics
 		Paint.FontMetrics fm = paint.getFontMetrics();  // Get Font Metrics
@@ -125,76 +147,76 @@ public class GLText {
 
 		// determine the width of each character (including unknown character)
 		// also determine the maximum character width
-		char[] s = new char[2];                     	// Create Character Array
-		charWidthMax = charHeight = 0;              	// Reset Character Width/Height Maximums
-		float[] w = new float[2];                   	// Working Width Value
-		int cnt = 0;                                	// Array Counter
+		char[] s = new char[2];                        // Create Character Array
+		charWidthMax = charHeight = 0;                // Reset Character Width/Height Maximums
+		float[] w = new float[2];                    // Working Width Value
+		int cnt = 0;                                    // Array Counter
 		for (char c = CHAR_START; c <= CHAR_END; c++) {  // FOR Each Character
-			s[0] = c;                                	// Set Character
-			paint.getTextWidths(s, 0, 1, w);       	// Get Character Bounds
-			charWidths[cnt] = w[0];                  	// Get Width
-			if (charWidths[cnt] > charWidthMax)    	// IF Width Larger Than Max Width
-				charWidthMax = charWidths[cnt];       	// Save New Max Width
-			cnt++;                                   	// Advance Array Counter
+			s[0] = c;                                    // Set Character
+			paint.getTextWidths(s, 0, 1, w);        // Get Character Bounds
+			charWidths[cnt] = w[0];                    // Get Width
+			if (charWidths[cnt] > charWidthMax)        // IF Width Larger Than Max Width
+				charWidthMax = charWidths[cnt];        // Save New Max Width
+			cnt++;                                    // Advance Array Counter
 		}
-		s[0] = CHAR_NONE;                           	// Set Unknown Character
-		paint.getTextWidths(s, 0, 1, w);          	// Get Character Bounds
-		charWidths[cnt] = w[0];                     	// Get Width
-		if (charWidths[cnt] > charWidthMax)       	// IF Width Larger Than Max Width
-			charWidthMax = charWidths[cnt];          	// Save New Max Width
-		cnt++;                                      	// Advance Array Counter
+		s[0] = CHAR_NONE;                            // Set Unknown Character
+		paint.getTextWidths(s, 0, 1, w);            // Get Character Bounds
+		charWidths[cnt] = w[0];                        // Get Width
+		if (charWidths[cnt] > charWidthMax)        // IF Width Larger Than Max Width
+			charWidthMax = charWidths[cnt];            // Save New Max Width
+		cnt++;                                        // Advance Array Counter
 
 		// set character height to font height
-		charHeight = fontHeight;                    	// Set Character Height
+		charHeight = fontHeight;                        // Set Character Height
 
 		// find the maximum size, validate, and setup cell sizes
 		cellWidth = (int) charWidthMax + (2 * fontPadX);  // Set Cell Width
 		cellHeight = (int) charHeight + (2 * fontPadY);  // Set Cell Height
 		int maxSize = cellWidth > cellHeight ? cellWidth : cellHeight;  // Save Max Size (Width/Height)
 		if (maxSize < FONT_SIZE_MIN || maxSize > FONT_SIZE_MAX)  // IF Maximum Size Outside Valid Bounds
-			return false;                            	// Return Error
+			return false;                                // Return Error
 
 		// set texture size based on max font size (width or height)
 		// NOTE: these values are fixed, based on the defined characters. when
 		// changing start/end characters (CHAR_START/CHAR_END) this will need adjustment too!
-		if (maxSize <= 24)                        	// IF Max Size is 18 or Less
-			textureSize = 256;                       	// Set 256 Texture Size
-		else if (maxSize <= 40)                   	// ELSE IF Max Size is 40 or Less
-			textureSize = 512;                       	// Set 512 Texture Size
-		else if (maxSize <= 80)                   	// ELSE IF Max Size is 80 or Less
-			textureSize = 1024;                      	// Set 1024 Texture Size
-		else                                        	// ELSE IF Max Size is Larger Than 80 (and Less than FONT_SIZE_MAX)
-			textureSize = 2048;                      	// Set 2048 Texture Size
+		if (maxSize <= 24)                            // IF Max Size is 18 or Less
+			textureSize = 256;                        // Set 256 Texture Size
+		else if (maxSize <= 40)                    // ELSE IF Max Size is 40 or Less
+			textureSize = 512;                        // Set 512 Texture Size
+		else if (maxSize <= 80)                    // ELSE IF Max Size is 80 or Less
+			textureSize = 1024;                        // Set 1024 Texture Size
+		else                                            // ELSE IF Max Size is Larger Than 80 (and Less than FONT_SIZE_MAX)
+			textureSize = 2048;                        // Set 2048 Texture Size
 
 		// create an empty bitmap (alpha only)
 		Bitmap bitmap = Bitmap.createBitmap(textureSize, textureSize, Bitmap.Config.ALPHA_8);  // Create Bitmap
-		Canvas canvas = new Canvas(bitmap);       	// Create Canvas for Rendering to Bitmap
-		bitmap.eraseColor(0x00000000);            	// Set Transparent Background (ARGB)
+		Canvas canvas = new Canvas(bitmap);        // Create Canvas for Rendering to Bitmap
+		bitmap.eraseColor(0x00000000);                // Set Transparent Background (ARGB)
 
 		// calculate rows/columns
 		// NOTE: while not required for anything, these may be useful to have :)
-		colCnt = textureSize / cellWidth;           	// Calculate Number of Columns
+		colCnt = textureSize / cellWidth;            // Calculate Number of Columns
 		rowCnt = (int) Math.ceil((float) CHAR_CNT / (float) colCnt);  // Calculate Number of Rows
 
 		// render each of the characters to the canvas (ie. build the font map)
-		float x = fontPadX;                         	// Set Start Position (X)
+		float x = fontPadX;                            // Set Start Position (X)
 		float y = (cellHeight - 1) - fontDescent - fontPadY;  // Set Start Position (Y)
 		for (char c = CHAR_START; c <= CHAR_END; c++) {  // FOR Each Character
-			s[0] = c;                                	// Set Character to Draw
-			canvas.drawText(s, 0, 1, x, y, paint); 	// Draw Character
-			x += cellWidth;                          	// Move to Next Character
+			s[0] = c;                                    // Set Character to Draw
+			canvas.drawText(s, 0, 1, x, y, paint);    // Draw Character
+			x += cellWidth;                            // Move to Next Character
 			if ((x + cellWidth - fontPadX) > textureSize) {  // IF End of Line Reached
-				x = fontPadX;                         	// Set X for New Row
-				y += cellHeight;                      	// Move Down a Row
+				x = fontPadX;                            // Set X for New Row
+				y += cellHeight;                        // Move Down a Row
 			}
 		}
-		s[0] = CHAR_NONE;                           	// Set Character to Use for NONE
-		canvas.drawText(s, 0, 1, x, y, paint);    	// Draw Character
+		s[0] = CHAR_NONE;                            // Set Character to Use for NONE
+		canvas.drawText(s, 0, 1, x, y, paint);        // Draw Character
 
 		// generate a new texture
-		int[] textureIds = new int[1];              	// Array to Get Texture Id
-		gl.glGenTextures(1, textureIds, 0);       	// Generate New Texture
-		textureId = textureIds[0];                  	// Save Texture Id
+		int[] textureIds = new int[1];                // Array to Get Texture Id
+		gl.glGenTextures(1, textureIds, 0);        // Generate New Texture
+		textureId = textureIds[0];                    // Save Texture Id
 
 		// setup filters for texture
 		gl.glBindTexture(GL10.GL_TEXTURE_2D, textureId);  // Bind Texture
@@ -205,20 +227,20 @@ public class GLText {
 
 		// load the generated bitmap onto the texture
 		GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bitmap, 0);  // Load Bitmap to Texture
-		gl.glBindTexture(GL10.GL_TEXTURE_2D, 0);  	// Unbind Texture
+		gl.glBindTexture(GL10.GL_TEXTURE_2D, 0);    // Unbind Texture
 
 		// release the bitmap
-		bitmap.recycle();                           	// Release the Bitmap
+		bitmap.recycle();                            // Release the Bitmap
 
 		// setup the array of character texture regions
-		x = 0;                                      	// Initialize X
-		y = 0;                                      	// Initialize Y
-		for (int c = 0; c < CHAR_CNT; c++) {     	// FOR Each Character (On Texture)
+		x = 0;                                        // Initialize X
+		y = 0;                                        // Initialize Y
+		for (int c = 0; c < CHAR_CNT; c++) {        // FOR Each Character (On Texture)
 			charRgn[c] = new TextureRegion(textureSize, textureSize, x, y, cellWidth - 1, cellHeight - 1);  // Create Region for Character
-			x += cellWidth;                          	// Move to Next Char (Cell)
+			x += cellWidth;                            // Move to Next Char (Cell)
 			if (x + cellWidth > textureSize) {
-				x = 0;                                	// Reset X Position to Start
-				y += cellHeight;                      	// Move to Next Row (Cell)
+				x = 0;                                    // Reset X Position to Start
+				y += cellHeight;                        // Move to Next Row (Cell)
 			}
 		}
 
@@ -226,7 +248,7 @@ public class GLText {
 		textureRgn = new TextureRegion(textureSize, textureSize, 0, 0, textureSize, textureSize);  // Create Full Texture Region
 
 		// return success
-		return true;                                	// Return Success
+		return true;                                    // Return Success
 	}
 
 	//--Begin/End Text Drawing--//
@@ -236,22 +258,22 @@ public class GLText {
 	//    alpha - optional alpha value for font (default = 1.0)
 	// R: [none]
 	public void begin() {
-		begin(1.0f, 1.0f, 1.0f, 1.0f);            	// Begin with White Opaque
+		begin(1.0f, 1.0f, 1.0f, 1.0f);                // Begin with White Opaque
 	}
 
 	public void begin(float alpha) {
-		begin(1.0f, 1.0f, 1.0f, alpha);           	// Begin with White (Explicit Alpha)
+		begin(1.0f, 1.0f, 1.0f, alpha);            // Begin with White (Explicit Alpha)
 	}
 
 	public void begin(float red, float green, float blue, float alpha) {
-		gl.glColor4f(red, green, blue, alpha);    	// Set Color+Alpha
+		gl.glColor4f(red, green, blue, alpha);        // Set Color+Alpha
 		gl.glBindTexture(GL10.GL_TEXTURE_2D, textureId);  // Bind the Texture
-		batch.beginBatch();                         	// Begin Batch
+		batch.beginBatch();                            // Begin Batch
 	}
 
 	public void end() {
-		batch.endBatch();                           	// End Batch
-		gl.glColor4f(1.0f, 1.0f, 1.0f, 1.0f);     	// Restore Default Color/Alpha
+		batch.endBatch();                            // End Batch
+		gl.glColor4f(1.0f, 1.0f, 1.0f, 1.0f);        // Restore Default Color/Alpha
 	}
 
 	//--Draw Text--//
@@ -260,17 +282,17 @@ public class GLText {
 	//    x, y - the x,y position to draw text at (bottom left of text; including descent)
 	// R: [none]
 	public void draw(String text, float x, float y) {
-		float chrHeight = cellHeight * scaleY;      	// Calculate Scaled Character Height
-		float chrWidth = cellWidth * scaleX;        	// Calculate Scaled Character Width
-		int len = text.length();                    	// Get String Length
+		float chrHeight = cellHeight * scaleY;        // Calculate Scaled Character Height
+		float chrWidth = cellWidth * scaleX;            // Calculate Scaled Character Width
+		int len = text.length();                        // Get String Length
 		x += (chrWidth / 2.0f) - (fontPadX * scaleX);  // Adjust Start X
 		y += (chrHeight / 2.0f) - (fontPadY * scaleY);  // Adjust Start Y
-		for (int i = 0; i < len; i++) {          	// FOR Each Character in String
+		for (int i = 0; i < len; i++) {            // FOR Each Character in String
 			int c = (int) text.charAt(i) - CHAR_START;  // Calculate Character Index (Offset by First Char in Font)
-			if (c < 0 || c >= CHAR_CNT)            	// IF Character Not In Font
-				c = CHAR_UNKNOWN;                     	// Set to Unknown Character Index
+			if (c < 0 || c >= CHAR_CNT)                // IF Character Not In Font
+				c = CHAR_UNKNOWN;                        // Set to Unknown Character Index
 			batch.drawSprite(x, y, chrWidth, chrHeight, charRgn[c]);  // Draw the Character
-			x += (charWidths[c] + spaceX) * scaleX;	// Advance X Position by Scaled Character Width
+			x += (charWidths[c] + spaceX) * scaleX;    // Advance X Position by Scaled Character Width
 		}
 	}
 
@@ -280,15 +302,15 @@ public class GLText {
 	//    x, y - the x,y position to draw text at (bottom left of text)
 	// R: the total width of the text that was drawn
 	public float drawC(String text, float x, float y) {
-		float len = getLength(text);              	// Get Text Length
+		float len = getLength(text);                // Get Text Length
 		draw(text, x - (len / 2.0f), y - (getCharHeight() / 2.0f));  // Draw Text Centered
-		return len;                                 	// Return Length
+		return len;                                    // Return Length
 	}
 
 	public float drawCX(String text, float x, float y) {
-		float len = getLength(text);              	// Get Text Length
-		draw(text, x - (len / 2.0f), y);        	// Draw Text Centered (X-Axis Only)
-		return len;                                 	// Return Length
+		float len = getLength(text);                // Get Text Length
+		draw(text, x - (len / 2.0f), y);            // Draw Text Centered (X-Axis Only)
+		return len;                                    // Return Length
 	}
 
 	public void drawCY(String text, float x, float y) {
@@ -301,12 +323,12 @@ public class GLText {
 	//    sx, sy - separate x and y axis scaling factors
 	// R: [none]
 	public void setScale(float scale) {
-		scaleX = scaleY = scale;                    	// Set Uniform Scale
+		scaleX = scaleY = scale;                        // Set Uniform Scale
 	}
 
 	public void setScale(float sx, float sy) {
-		scaleX = sx;                                	// Set X Scale
-		scaleY = sy;                                	// Set Y Scale
+		scaleX = sx;                                    // Set X Scale
+		scaleY = sy;                                    // Set Y Scale
 	}
 
 	//--Get Scale--//
@@ -314,11 +336,11 @@ public class GLText {
 	// A: [none]
 	// R: the x/y scale currently used for scale
 	public float getScaleX() {
-		return scaleX;                              	// Return X Scale
+		return scaleX;                                // Return X Scale
 	}
 
 	public float getScaleY() {
-		return scaleY;                              	// Return Y Scale
+		return scaleY;                                // Return Y Scale
 	}
 
 	//--Set Space--//
@@ -326,7 +348,7 @@ public class GLText {
 	// A: space - space for x axis spacing
 	// R: [none]
 	public void setSpace(float space) {
-		spaceX = space;                             	// Set Space
+		spaceX = space;                                // Set Space
 	}
 
 	//--Get Space--//
@@ -334,7 +356,7 @@ public class GLText {
 	// A: [none]
 	// R: the x/y space currently used for scale
 	public float getSpace() {
-		return spaceX;                              	// Return X Space
+		return spaceX;                                // Return X Space
 	}
 
 	//--Get Length of a String--//
@@ -342,14 +364,14 @@ public class GLText {
 	// A: text - the string to get length for
 	// R: the length of the specified string (pixels)
 	public float getLength(String text) {
-		float len = 0.0f;                           	// Working Length
-		int strLen = text.length();                 	// Get String Length (Characters)
-		for (int i = 0; i < strLen; i++) {       	// For Each Character in String (Except Last
+		float len = 0.0f;                            // Working Length
+		int strLen = text.length();                    // Get String Length (Characters)
+		for (int i = 0; i < strLen; i++) {        // For Each Character in String (Except Last
 			int c = (int) text.charAt(i) - CHAR_START;  // Calculate Character Index (Offset by First Char in Font)
-			len += (charWidths[c] * scaleX);       	// Add Scaled Character Width to Total Length
+			len += (charWidths[c] * scaleX);        // Add Scaled Character Width to Total Length
 		}
 		len += (strLen > 1 ? ((strLen - 1) * spaceX) * scaleX : 0);  // Add Space Length
-		return len;                                 	// Return Total Length
+		return len;                                    // Return Total Length
 	}
 
 	//--Get Width/Height of Character--//
@@ -359,16 +381,16 @@ public class GLText {
 	// A: chr - the character to get width for
 	// R: the requested character size (scaled)
 	public float getCharWidth(char chr) {
-		int c = chr - CHAR_START;                   	// Calculate Character Index (Offset by First Char in Font)
-		return (charWidths[c] * scaleX);          	// Return Scaled Character Width
+		int c = chr - CHAR_START;                    // Calculate Character Index (Offset by First Char in Font)
+		return (charWidths[c] * scaleX);            // Return Scaled Character Width
 	}
 
 	public float getCharWidthMax() {
-		return (charWidthMax * scaleX);           	// Return Scaled Max Character Width
+		return (charWidthMax * scaleX);            // Return Scaled Max Character Width
 	}
 
 	public float getCharHeight() {
-		return (charHeight * scaleY);             	// Return Scaled Character Height
+		return (charHeight * scaleY);                // Return Scaled Character Height
 	}
 
 	//--Get Font Metrics--//
@@ -376,15 +398,15 @@ public class GLText {
 	// A: [none]
 	// R: the requested font metric (scaled)
 	public float getAscent() {
-		return (fontAscent * scaleY);             	// Return Font Ascent
+		return (fontAscent * scaleY);                // Return Font Ascent
 	}
 
 	public float getDescent() {
-		return (fontDescent * scaleY);            	// Return Font Descent
+		return (fontDescent * scaleY);                // Return Font Descent
 	}
 
 	public float getHeight() {
-		return (fontHeight * scaleY);             	// Return Font Height (Actual)
+		return (fontHeight * scaleY);                // Return Font Height (Actual)
 	}
 
 	//--Draw Font Texture--//
@@ -392,9 +414,9 @@ public class GLText {
 	// A: width, height - the width and height of the area to draw to. this is used
 	//    to draw the texture to the top-left corner.
 	public void drawTexture(int width, int height) {
-		batch.beginBatch(textureId);              	// Begin Batch (Bind Texture)
+		batch.beginBatch(textureId);                // Begin Batch (Bind Texture)
 		batch.drawSprite(textureSize / 2, height - (textureSize / 2), textureSize, textureSize, textureRgn);  // Draw
-		batch.endBatch();                           	// End Batch
+		batch.endBatch();                            // End Batch
 	}
 
 
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/GLView.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/GLView.java
index dc9e9998..40f46dcf 100755
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/GLView.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/GLView.java
@@ -1,4 +1,24 @@
-// Copyright (C) 2009 Mihai Preda
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
 
 package org.solovyev.android.calculator.plot;
 
@@ -10,11 +30,13 @@ import android.util.AttributeSet;
 import android.util.Log;
 import android.view.SurfaceHolder;
 import android.view.SurfaceView;
+
 import javax.annotation.Nonnull;
 
 import javax.microedition.khronos.egl.*;
 import javax.microedition.khronos.opengles.GL10;
 import javax.microedition.khronos.opengles.GL11;
+
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
 import java.nio.ShortBuffer;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/Graph2dDimensions.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/Graph2dDimensions.java
index d6e9f6a9..052bb525 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/Graph2dDimensions.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/Graph2dDimensions.java
@@ -1,7 +1,31 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import android.view.View;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.common.math.Point2d;
 
 /**
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/Graph3d.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/Graph3d.java
index 29b8ce13..db55d66a 100755
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/Graph3d.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/Graph3d.java
@@ -1,12 +1,34 @@
-// Copyright (C) 2009-2010 Mihai Preda
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
 
 package org.solovyev.android.calculator.plot;
 
 import android.graphics.Color;
+
 import javax.annotation.Nonnull;
 
 import javax.microedition.khronos.opengles.GL10;
 import javax.microedition.khronos.opengles.GL11;
+
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
 import java.nio.FloatBuffer;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphCalculator.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphCalculator.java
index 056c3392..ce8f7a5a 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphCalculator.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphCalculator.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import javax.annotation.Nonnull;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphCalculatorImpl.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphCalculatorImpl.java
index 355ecb7e..0ee1f2f1 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphCalculatorImpl.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphCalculatorImpl.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import javax.annotation.Nonnull;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphData.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphData.java
index 78d29d7c..a00e6978 100755
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphData.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphData.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import javax.annotation.Nonnull;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphView.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphView.java
index e95e2e97..4c9e6932 100755
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphView.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphView.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import android.graphics.Bitmap;
 import android.widget.ZoomButtonsController;
+
 import javax.annotation.Nonnull;
 
 import java.util.List;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphViewHelper.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphViewHelper.java
index d04d67a8..664ced1d 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphViewHelper.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphViewHelper.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import javax.annotation.Nonnull;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphsData.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphsData.java
index 6b2a0030..1f6430c1 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphsData.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/GraphsData.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import javax.annotation.Nonnull;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/PlotFunctionListItem.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/PlotFunctionListItem.java
index af9d351d..368b7d1f 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/PlotFunctionListItem.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/PlotFunctionListItem.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import android.content.Context;
@@ -6,6 +28,7 @@ import android.widget.CheckBox;
 import android.widget.CompoundButton;
 import android.widget.ImageButton;
 import android.widget.TextView;
+
 import org.solovyev.android.calculator.Locator;
 import org.solovyev.android.calculator.R;
 import org.solovyev.android.list.ListItem;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/PlotViewDef.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/PlotViewDef.java
index 7423e50a..1978d57e 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/PlotViewDef.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/PlotViewDef.java
@@ -1,6 +1,29 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import android.graphics.Color;
+
 import javax.annotation.Nonnull;
 
 /**
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/SpriteBatch.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/SpriteBatch.java
index b9b92af9..3afafb59 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/SpriteBatch.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/SpriteBatch.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import javax.microedition.khronos.opengles.GL10;
@@ -5,42 +27,42 @@ import javax.microedition.khronos.opengles.GL10;
 public class SpriteBatch {
 
 	//--Constants--//
-	final static int VERTEX_SIZE = 4;              	// Vertex Size (in Components) ie. (X,Y,U,V)
-	final static int VERTICES_PER_SPRITE = 4;      	// Vertices Per Sprite
-	final static int INDICES_PER_SPRITE = 6;       	// Indices Per Sprite
+	final static int VERTEX_SIZE = 4;                // Vertex Size (in Components) ie. (X,Y,U,V)
+	final static int VERTICES_PER_SPRITE = 4;        // Vertices Per Sprite
+	final static int INDICES_PER_SPRITE = 6;        // Indices Per Sprite
 
 	//--Members--//
-	GL10 gl;                                       	// GL Instance
-	Vertices vertices;                             	// Vertices Instance Used for Rendering
-	float[] vertexBuffer;                          	// Vertex Buffer
-	int bufferIndex;                               	// Vertex Buffer Start Index
-	int maxSprites;                                	// Maximum Sprites Allowed in Buffer
-	int numSprites;                                	// Number of Sprites Currently in Buffer
+	GL10 gl;                                        // GL Instance
+	Vertices vertices;                                // Vertices Instance Used for Rendering
+	float[] vertexBuffer;                            // Vertex Buffer
+	int bufferIndex;                                // Vertex Buffer Start Index
+	int maxSprites;                                    // Maximum Sprites Allowed in Buffer
+	int numSprites;                                    // Number of Sprites Currently in Buffer
 
 	//--Constructor--//
 	// D: prepare the sprite batcher for specified maximum number of sprites
 	// A: gl - the gl instance to use for rendering
 	//    maxSprites - the maximum allowed sprites per batch
 	public SpriteBatch(GL10 gl, int maxSprites) {
-		this.gl = gl;                               	// Save GL Instance
+		this.gl = gl;                                // Save GL Instance
 		this.vertexBuffer = new float[maxSprites * VERTICES_PER_SPRITE * VERTEX_SIZE];  // Create Vertex Buffer
 		this.vertices = new Vertices(gl, maxSprites * VERTICES_PER_SPRITE, maxSprites * INDICES_PER_SPRITE, false, true, false);  // Create Rendering Vertices
-		this.bufferIndex = 0;                       	// Reset Buffer Index
-		this.maxSprites = maxSprites;               	// Save Maximum Sprites
-		this.numSprites = 0;                        	// Clear Sprite Counter
+		this.bufferIndex = 0;                        // Reset Buffer Index
+		this.maxSprites = maxSprites;                // Save Maximum Sprites
+		this.numSprites = 0;                            // Clear Sprite Counter
 
 		short[] indices = new short[maxSprites * INDICES_PER_SPRITE];  // Create Temp Index Buffer
-		int len = indices.length;                   	// Get Index Buffer Length
-		short j = 0;                                	// Counter
+		int len = indices.length;                    // Get Index Buffer Length
+		short j = 0;                                    // Counter
 		for (int i = 0; i < len; i += INDICES_PER_SPRITE, j += VERTICES_PER_SPRITE) {  // FOR Each Index Set (Per Sprite)
-			indices[i + 0] = (short) (j + 0);       	// Calculate Index 0
-			indices[i + 1] = (short) (j + 1);       	// Calculate Index 1
-			indices[i + 2] = (short) (j + 2);       	// Calculate Index 2
-			indices[i + 3] = (short) (j + 2);       	// Calculate Index 3
-			indices[i + 4] = (short) (j + 3);       	// Calculate Index 4
-			indices[i + 5] = (short) (j + 0);       	// Calculate Index 5
+			indices[i + 0] = (short) (j + 0);        // Calculate Index 0
+			indices[i + 1] = (short) (j + 1);        // Calculate Index 1
+			indices[i + 2] = (short) (j + 2);        // Calculate Index 2
+			indices[i + 3] = (short) (j + 2);        // Calculate Index 3
+			indices[i + 4] = (short) (j + 3);        // Calculate Index 4
+			indices[i + 5] = (short) (j + 0);        // Calculate Index 5
 		}
-		vertices.setIndices(indices, 0, len);     	// Set Index Buffer for Rendering
+		vertices.setIndices(indices, 0, len);        // Set Index Buffer for Rendering
 	}
 
 	//--Begin Batch--//
@@ -50,13 +72,13 @@ public class SpriteBatch {
 	// R: [none]
 	public void beginBatch(int textureId) {
 		gl.glBindTexture(GL10.GL_TEXTURE_2D, textureId);  // Bind the Texture
-		numSprites = 0;                             	// Empty Sprite Counter
-		bufferIndex = 0;                            	// Reset Buffer Index (Empty)
+		numSprites = 0;                                // Empty Sprite Counter
+		bufferIndex = 0;                                // Reset Buffer Index (Empty)
 	}
 
 	public void beginBatch() {
-		numSprites = 0;                             	// Empty Sprite Counter
-		bufferIndex = 0;                            	// Reset Buffer Index (Empty)
+		numSprites = 0;                                // Empty Sprite Counter
+		bufferIndex = 0;                                // Reset Buffer Index (Empty)
 	}
 
 	//--End Batch--//
@@ -64,11 +86,11 @@ public class SpriteBatch {
 	// A: [none]
 	// R: [none]
 	public void endBatch() {
-		if (numSprites > 0) {                    	// IF Any Sprites to Render
+		if (numSprites > 0) {                        // IF Any Sprites to Render
 			vertices.setVertices(vertexBuffer, 0, bufferIndex);  // Set Vertices from Buffer
-			vertices.bind();                         	// Bind Vertices
+			vertices.bind();                            // Bind Vertices
 			vertices.draw(GL10.GL_TRIANGLES, 0, numSprites * INDICES_PER_SPRITE);  // Render Batched Sprites
-			vertices.unbind();                       	// Unbind Vertices
+			vertices.unbind();                        // Unbind Vertices
 		}
 	}
 
@@ -82,40 +104,40 @@ public class SpriteBatch {
 	//    region - the texture region to use for sprite
 	// R: [none]
 	public void drawSprite(float x, float y, float width, float height, TextureRegion region) {
-		if (numSprites == maxSprites) {          	// IF Sprite Buffer is Full
-			endBatch();                              	// End Batch
+		if (numSprites == maxSprites) {            // IF Sprite Buffer is Full
+			endBatch();                                // End Batch
 			// NOTE: leave current texture bound!!
-			numSprites = 0;                          	// Empty Sprite Counter
-			bufferIndex = 0;                         	// Reset Buffer Index (Empty)
+			numSprites = 0;                            // Empty Sprite Counter
+			bufferIndex = 0;                            // Reset Buffer Index (Empty)
 		}
 
-		float halfWidth = width / 2.0f;             	// Calculate Half Width
-		float halfHeight = height / 2.0f;           	// Calculate Half Height
-		float x1 = x - halfWidth;                   	// Calculate Left X
-		float y1 = y - halfHeight;                  	// Calculate Bottom Y
-		float x2 = x + halfWidth;                   	// Calculate Right X
-		float y2 = y + halfHeight;                  	// Calculate Top Y
+		float halfWidth = width / 2.0f;                // Calculate Half Width
+		float halfHeight = height / 2.0f;            // Calculate Half Height
+		float x1 = x - halfWidth;                    // Calculate Left X
+		float y1 = y - halfHeight;                    // Calculate Bottom Y
+		float x2 = x + halfWidth;                    // Calculate Right X
+		float y2 = y + halfHeight;                    // Calculate Top Y
 
-		vertexBuffer[bufferIndex++] = x1;           	// Add X for Vertex 0
-		vertexBuffer[bufferIndex++] = y1;           	// Add Y for Vertex 0
-		vertexBuffer[bufferIndex++] = region.u1;    	// Add U for Vertex 0
-		vertexBuffer[bufferIndex++] = region.v2;    	// Add V for Vertex 0
+		vertexBuffer[bufferIndex++] = x1;            // Add X for Vertex 0
+		vertexBuffer[bufferIndex++] = y1;            // Add Y for Vertex 0
+		vertexBuffer[bufferIndex++] = region.u1;        // Add U for Vertex 0
+		vertexBuffer[bufferIndex++] = region.v2;        // Add V for Vertex 0
 
-		vertexBuffer[bufferIndex++] = x2;           	// Add X for Vertex 1
-		vertexBuffer[bufferIndex++] = y1;           	// Add Y for Vertex 1
-		vertexBuffer[bufferIndex++] = region.u2;    	// Add U for Vertex 1
-		vertexBuffer[bufferIndex++] = region.v2;    	// Add V for Vertex 1
+		vertexBuffer[bufferIndex++] = x2;            // Add X for Vertex 1
+		vertexBuffer[bufferIndex++] = y1;            // Add Y for Vertex 1
+		vertexBuffer[bufferIndex++] = region.u2;        // Add U for Vertex 1
+		vertexBuffer[bufferIndex++] = region.v2;        // Add V for Vertex 1
 
-		vertexBuffer[bufferIndex++] = x2;           	// Add X for Vertex 2
-		vertexBuffer[bufferIndex++] = y2;           	// Add Y for Vertex 2
-		vertexBuffer[bufferIndex++] = region.u2;    	// Add U for Vertex 2
-		vertexBuffer[bufferIndex++] = region.v1;    	// Add V for Vertex 2
+		vertexBuffer[bufferIndex++] = x2;            // Add X for Vertex 2
+		vertexBuffer[bufferIndex++] = y2;            // Add Y for Vertex 2
+		vertexBuffer[bufferIndex++] = region.u2;        // Add U for Vertex 2
+		vertexBuffer[bufferIndex++] = region.v1;        // Add V for Vertex 2
 
-		vertexBuffer[bufferIndex++] = x1;           	// Add X for Vertex 3
-		vertexBuffer[bufferIndex++] = y2;           	// Add Y for Vertex 3
-		vertexBuffer[bufferIndex++] = region.u1;    	// Add U for Vertex 3
-		vertexBuffer[bufferIndex++] = region.v1;    	// Add V for Vertex 3
+		vertexBuffer[bufferIndex++] = x1;            // Add X for Vertex 3
+		vertexBuffer[bufferIndex++] = y2;            // Add Y for Vertex 3
+		vertexBuffer[bufferIndex++] = region.u1;        // Add U for Vertex 3
+		vertexBuffer[bufferIndex++] = region.v1;        // Add V for Vertex 3
 
-		numSprites++;                               	// Increment Sprite Count
+		numSprites++;                                // Increment Sprite Count
 	}
 }
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/TexampleRenderer.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/TexampleRenderer.java
index 227b6375..a7102955 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/TexampleRenderer.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/TexampleRenderer.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 // This is based on the OpenGL ES 1.0 sample application from the Android Developer website:
 // http://developer.android.com/resources/tutorials/opengl/opengl-es10.html
 
@@ -11,15 +33,15 @@ import javax.microedition.khronos.opengles.GL10;
 
 public class TexampleRenderer implements GLSurfaceView.Renderer {
 
-	private GLText glText;                         	// A GLText Instance
-	private Context context;                       	// Context (from Activity)
+	private GLText glText;                            // A GLText Instance
+	private Context context;                        // Context (from Activity)
 
-	private int width = 100;                       	// Updated to the Current Width + Height in onSurfaceChanged()
+	private int width = 100;                        // Updated to the Current Width + Height in onSurfaceChanged()
 	private int height = 100;
 
 	public TexampleRenderer(Context context) {
 		super();
-		this.context = context;                     	// Save Specified Context
+		this.context = context;                        // Save Specified Context
 	}
 
 	public void onSurfaceCreated(GL10 gl, EGLConfig config) {
@@ -39,51 +61,51 @@ public class TexampleRenderer implements GLSurfaceView.Renderer {
 		gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
 
 		// Set to ModelView mode
-		gl.glMatrixMode(GL10.GL_MODELVIEW);       	// Activate Model View Matrix
-		gl.glLoadIdentity();                        	// Load Identity Matrix
+		gl.glMatrixMode(GL10.GL_MODELVIEW);        // Activate Model View Matrix
+		gl.glLoadIdentity();                            // Load Identity Matrix
 
 		// enable texture + alpha blending
 		// NOTE: this is required for text rendering! we could incorporate it into
 		// the GLText class, but then it would be called multiple times (which impacts performance).
-		gl.glEnable(GL10.GL_TEXTURE_2D);          	// Enable Texture Mapping
-		gl.glEnable(GL10.GL_BLEND);               	// Enable Alpha Blend
+		gl.glEnable(GL10.GL_TEXTURE_2D);            // Enable Texture Mapping
+		gl.glEnable(GL10.GL_BLEND);                // Enable Alpha Blend
 		gl.glBlendFunc(GL10.GL_SRC_ALPHA, GL10.GL_ONE_MINUS_SRC_ALPHA);  // Set Alpha Blend Function
 
 		// TEST: render the entire font texture
-		gl.glColor4f(1.0f, 1.0f, 1.0f, 1.0f);     	// Set Color to Use
-		glText.drawTexture(width, height);        	// Draw the Entire Texture
+		gl.glColor4f(1.0f, 1.0f, 1.0f, 1.0f);        // Set Color to Use
+		glText.drawTexture(width, height);            // Draw the Entire Texture
 
 		// TEST: render some strings with the font
-		glText.begin(1.0f, 1.0f, 1.0f, 1.0f);     	// Begin Text Rendering (Set Color WHITE)
-		glText.draw("Test String :)", 0, 0);      	// Draw Test String
-		glText.draw("Line 1", 50, 50);            	// Draw Test String
-		glText.draw("Line 2", 100, 100);          	// Draw Test String
-		glText.end();                               	// End Text Rendering
+		glText.begin(1.0f, 1.0f, 1.0f, 1.0f);        // Begin Text Rendering (Set Color WHITE)
+		glText.draw("Test String :)", 0, 0);        // Draw Test String
+		glText.draw("Line 1", 50, 50);                // Draw Test String
+		glText.draw("Line 2", 100, 100);            // Draw Test String
+		glText.end();                                // End Text Rendering
 
-		glText.begin(0.0f, 0.0f, 1.0f, 1.0f);     	// Begin Text Rendering (Set Color BLUE)
-		glText.draw("More Lines...", 50, 150);    	// Draw Test String
+		glText.begin(0.0f, 0.0f, 1.0f, 1.0f);        // Begin Text Rendering (Set Color BLUE)
+		glText.draw("More Lines...", 50, 150);        // Draw Test String
 		glText.draw("The End.", 50, 150 + glText.getCharHeight());  // Draw Test String
-		glText.end();                               	// End Text Rendering
+		glText.end();                                // End Text Rendering
 
 		// disable texture + alpha
-		gl.glDisable(GL10.GL_BLEND);              	// Disable Alpha Blend
-		gl.glDisable(GL10.GL_TEXTURE_2D);         	// Disable Texture Mapping
+		gl.glDisable(GL10.GL_BLEND);                // Disable Alpha Blend
+		gl.glDisable(GL10.GL_TEXTURE_2D);            // Disable Texture Mapping
 	}
 
 	public void onSurfaceChanged(GL10 gl, int width, int height) {
 		gl.glViewport(0, 0, width, height);
 
 		// Setup orthographic projection
-		gl.glMatrixMode(GL10.GL_PROJECTION);      	// Activate Projection Matrix
-		gl.glLoadIdentity();                        	// Load Identity Matrix
-		gl.glOrthof(                                	// Set Ortho Projection (Left,Right,Bottom,Top,Front,Back)
+		gl.glMatrixMode(GL10.GL_PROJECTION);        // Activate Projection Matrix
+		gl.glLoadIdentity();                            // Load Identity Matrix
+		gl.glOrthof(                                    // Set Ortho Projection (Left,Right,Bottom,Top,Front,Back)
 				0, width,
 				0, height,
 				1.0f, -1.0f
 		);
 
 		// Save width and height
-		this.width = width;                         	// Save Current Width
-		this.height = height;                       	// Save Current Height
+		this.width = width;                            // Save Current Width
+		this.height = height;                        // Save Current Height
 	}
 }
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/TextureRegion.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/TextureRegion.java
index 4a682c15..7c564fd7 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/TextureRegion.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/TextureRegion.java
@@ -1,10 +1,32 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 class TextureRegion {
 
 	//--Members--//
-	public float u1, v1;                           	// Top/Left U,V Coordinates
-	public float u2, v2;                           	// Bottom/Right U,V Coordinates
+	public float u1, v1;                            // Top/Left U,V Coordinates
+	public float u2, v2;                            // Bottom/Right U,V Coordinates
 
 	//--Constructor--//
 	// D: calculate U,V coordinates from specified texture coordinates
@@ -12,9 +34,9 @@ class TextureRegion {
 	//    x, y - the top/left (x,y) of the region on the texture (in pixels)
 	//    width, height - the width and height of the region on the texture (in pixels)
 	public TextureRegion(float texWidth, float texHeight, float x, float y, float width, float height) {
-		this.u1 = x / texWidth;                     	// Calculate U1
-		this.v1 = y / texHeight;                    	// Calculate V1
-		this.u2 = this.u1 + (width / texWidth);   	// Calculate U2
-		this.v2 = this.v1 + (height / texHeight); 	// Calculate V2
+		this.u1 = x / texWidth;                        // Calculate U1
+		this.v1 = y / texHeight;                        // Calculate V1
+		this.u2 = this.u1 + (width / texWidth);    // Calculate U2
+		this.v2 = this.v1 + (height / texHeight);    // Calculate V2
 	}
 }
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/TouchHandler.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/TouchHandler.java
index d5f48453..44fd6602 100755
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/TouchHandler.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/TouchHandler.java
@@ -1,10 +1,32 @@
-// Copyright (C) 2009-2010 Mihai Preda
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
 
 package org.solovyev.android.calculator.plot;
 
 import android.view.MotionEvent;
 import android.view.VelocityTracker;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.Views;
 
 class TouchHandler {
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/Vertices.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/Vertices.java
index 95d379e4..44e459ef 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/Vertices.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/Vertices.java
@@ -1,6 +1,29 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import javax.microedition.khronos.opengles.GL10;
+
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
 import java.nio.IntBuffer;
@@ -9,28 +32,28 @@ import java.nio.ShortBuffer;
 public class Vertices {
 
 	//--Constants--//
-	final static int POSITION_CNT_2D = 2;          	// Number of Components in Vertex Position for 2D
-	final static int POSITION_CNT_3D = 3;          	// Number of Components in Vertex Position for 3D
-	final static int COLOR_CNT = 4;                	// Number of Components in Vertex Color
-	final static int TEXCOORD_CNT = 2;             	// Number of Components in Vertex Texture Coords
-	final static int NORMAL_CNT = 3;               	// Number of Components in Vertex Normal
+	final static int POSITION_CNT_2D = 2;            // Number of Components in Vertex Position for 2D
+	final static int POSITION_CNT_3D = 3;            // Number of Components in Vertex Position for 3D
+	final static int COLOR_CNT = 4;                    // Number of Components in Vertex Color
+	final static int TEXCOORD_CNT = 2;                // Number of Components in Vertex Texture Coords
+	final static int NORMAL_CNT = 3;                // Number of Components in Vertex Normal
 
-	final static int INDEX_SIZE = Short.SIZE / 8;  	// Index Byte Size (Short.SIZE = bits)
+	final static int INDEX_SIZE = Short.SIZE / 8;    // Index Byte Size (Short.SIZE = bits)
 
 	//--Members--//
 	// NOTE: all members are constant, and initialized in constructor!
-	final GL10 gl;                                 	// GL Instance
-	final boolean hasColor;                        	// Use Color in Vertices
-	final boolean hasTexCoords;                    	// Use Texture Coords in Vertices
-	final boolean hasNormals;                      	// Use Normals in Vertices
-	public final int positionCnt;                  	// Number of Position Components (2=2D, 3=3D)
-	public final int vertexStride;                 	// Vertex Stride (Element Size of a Single Vertex)
-	public final int vertexSize;                   	// Bytesize of a Single Vertex
-	final IntBuffer vertices;                      	// Vertex Buffer
-	final ShortBuffer indices;                     	// Index Buffer
-	public int numVertices;                        	// Number of Vertices in Buffer
-	public int numIndices;                         	// Number of Indices in Buffer
-	final int[] tmpBuffer;                         	// Temp Buffer for Vertex Conversion
+	final GL10 gl;                                    // GL Instance
+	final boolean hasColor;                            // Use Color in Vertices
+	final boolean hasTexCoords;                        // Use Texture Coords in Vertices
+	final boolean hasNormals;                        // Use Normals in Vertices
+	public final int positionCnt;                    // Number of Position Components (2=2D, 3=3D)
+	public final int vertexStride;                    // Vertex Stride (Element Size of a Single Vertex)
+	public final int vertexSize;                    // Bytesize of a Single Vertex
+	final IntBuffer vertices;                        // Vertex Buffer
+	final ShortBuffer indices;                        // Index Buffer
+	public int numVertices;                            // Number of Vertices in Buffer
+	public int numIndices;                            // Number of Indices in Buffer
+	final int[] tmpBuffer;                            // Temp Buffer for Vertex Conversion
 
 	//--Constructor--//
 	// D: create the vertices/indices as specified (for 2d/3d)
@@ -47,27 +70,27 @@ public class Vertices {
 	}
 
 	public Vertices(GL10 gl, int maxVertices, int maxIndices, boolean hasColor, boolean hasTexCoords, boolean hasNormals, boolean use3D) {
-		this.gl = gl;                               	// Save GL Instance
-		this.hasColor = hasColor;                   	// Save Color Flag
-		this.hasTexCoords = hasTexCoords;           	// Save Texture Coords Flag
-		this.hasNormals = hasNormals;               	// Save Normals Flag
+		this.gl = gl;                                // Save GL Instance
+		this.hasColor = hasColor;                    // Save Color Flag
+		this.hasTexCoords = hasTexCoords;            // Save Texture Coords Flag
+		this.hasNormals = hasNormals;                // Save Normals Flag
 		this.positionCnt = use3D ? POSITION_CNT_3D : POSITION_CNT_2D;  // Set Position Component Count
 		this.vertexStride = this.positionCnt + (hasColor ? COLOR_CNT : 0) + (hasTexCoords ? TEXCOORD_CNT : 0) + (hasNormals ? NORMAL_CNT : 0);  // Calculate Vertex Stride
-		this.vertexSize = this.vertexStride * 4;    	// Calculate Vertex Byte Size
+		this.vertexSize = this.vertexStride * 4;        // Calculate Vertex Byte Size
 
 		ByteBuffer buffer = ByteBuffer.allocateDirect(maxVertices * vertexSize);  // Allocate Buffer for Vertices (Max)
-		buffer.order(ByteOrder.nativeOrder());    	// Set Native Byte Order
-		this.vertices = buffer.asIntBuffer();       	// Save Vertex Buffer
+		buffer.order(ByteOrder.nativeOrder());        // Set Native Byte Order
+		this.vertices = buffer.asIntBuffer();        // Save Vertex Buffer
 
-		if (maxIndices > 0) {                    	// IF Indices Required
+		if (maxIndices > 0) {                        // IF Indices Required
 			buffer = ByteBuffer.allocateDirect(maxIndices * INDEX_SIZE);  // Allocate Buffer for Indices (MAX)
-			buffer.order(ByteOrder.nativeOrder()); 	// Set Native Byte Order
-			this.indices = buffer.asShortBuffer();   	// Save Index Buffer
-		} else                                        	// ELSE Indices Not Required
-			indices = null;                          	// No Index Buffer
+			buffer.order(ByteOrder.nativeOrder());    // Set Native Byte Order
+			this.indices = buffer.asShortBuffer();    // Save Index Buffer
+		} else                                            // ELSE Indices Not Required
+			indices = null;                            // No Index Buffer
 
-		numVertices = 0;                            	// Zero Vertices in Buffer
-		numIndices = 0;                             	// Zero Indices in Buffer
+		numVertices = 0;                                // Zero Vertices in Buffer
+		numIndices = 0;                                // Zero Indices in Buffer
 
 		this.tmpBuffer = new int[maxVertices * vertexSize / 4];  // Create Temp Buffer
 	}
@@ -81,12 +104,12 @@ public class Vertices {
 	//             for easy setting use: vtx_cnt * (this.vertexSize / 4)
 	// R: [none]
 	public void setVertices(float[] vertices, int offset, int length) {
-		this.vertices.clear();                      	// Remove Existing Vertices
-		int last = offset + length;                 	// Calculate Last Element
+		this.vertices.clear();                        // Remove Existing Vertices
+		int last = offset + length;                    // Calculate Last Element
 		for (int i = offset, j = 0; i < last; i++, j++)  // FOR Each Specified Vertex
 			tmpBuffer[j] = Float.floatToRawIntBits(vertices[i]);  // Set Vertex as Raw Integer Bits in Buffer
-		this.vertices.put(tmpBuffer, 0, length);  	// Set New Vertices
-		this.vertices.flip();                       	// Flip Vertex Buffer
+		this.vertices.put(tmpBuffer, 0, length);    // Set New Vertices
+		this.vertices.flip();                        // Flip Vertex Buffer
 		this.numVertices = length / this.vertexStride;  // Save Number of Vertices
 		//this.numVertices = length / ( this.vertexSize / 4 );  // Save Number of Vertices
 	}
@@ -98,10 +121,10 @@ public class Vertices {
 	//    length - number of indices in array (from offset)
 	// R: [none]
 	public void setIndices(short[] indices, int offset, int length) {
-		this.indices.clear();                       	// Clear Existing Indices
-		this.indices.put(indices, offset, length);	// Set New Indices
-		this.indices.flip();                        	// Flip Index Buffer
-		this.numIndices = length;                   	// Save Number of Indices
+		this.indices.clear();                        // Clear Existing Indices
+		this.indices.put(indices, offset, length);    // Set New Indices
+		this.indices.flip();                            // Flip Index Buffer
+		this.numIndices = length;                    // Save Number of Indices
 	}
 
 	//--Bind--//
@@ -111,16 +134,16 @@ public class Vertices {
 	// R: [none]
 	public void bind() {
 		gl.glEnableClientState(GL10.GL_VERTEX_ARRAY); // Enable Position in Vertices
-		vertices.position(0);                     	// Set Vertex Buffer to Position
+		vertices.position(0);                        // Set Vertex Buffer to Position
 		gl.glVertexPointer(positionCnt, GL10.GL_FLOAT, vertexSize, vertices);  // Set Vertex Pointer
 
-		if (hasColor) {                          	// IF Vertices Have Color
+		if (hasColor) {                            // IF Vertices Have Color
 			gl.glEnableClientState(GL10.GL_COLOR_ARRAY);  // Enable Color in Vertices
-			vertices.position(positionCnt);        	// Set Vertex Buffer to Color
+			vertices.position(positionCnt);            // Set Vertex Buffer to Color
 			gl.glColorPointer(COLOR_CNT, GL10.GL_FLOAT, vertexSize, vertices);  // Set Color Pointer
 		}
 
-		if (hasTexCoords) {                      	// IF Vertices Have Texture Coords
+		if (hasTexCoords) {                        // IF Vertices Have Texture Coords
 			gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);  // Enable Texture Coords in Vertices
 			vertices.position(positionCnt + (hasColor ? COLOR_CNT : 0));  // Set Vertex Buffer to Texture Coords (NOTE: position based on whether color is also specified)
 			gl.glTexCoordPointer(TEXCOORD_CNT, GL10.GL_FLOAT, vertexSize, vertices);  // Set Texture Coords Pointer
@@ -141,10 +164,10 @@ public class Vertices {
 	//    numVertices - the number of vertices (indices) to draw
 	// R: [none]
 	public void draw(int primitiveType, int offset, int numVertices) {
-		if (indices != null) {                   	// IF Indices Exist
-			indices.position(offset);              	// Set Index Buffer to Specified Offset
+		if (indices != null) {                    // IF Indices Exist
+			indices.position(offset);                // Set Index Buffer to Specified Offset
 			gl.glDrawElements(primitiveType, numVertices, GL10.GL_UNSIGNED_SHORT, indices);  // Draw Indexed
-		} else {                                     	// ELSE No Indices Exist
+		} else {                                        // ELSE No Indices Exist
 			gl.glDrawArrays(primitiveType, offset, numVertices);  // Draw Direct (Array)
 		}
 	}
@@ -155,13 +178,13 @@ public class Vertices {
 	// A: [none]
 	// R: [none]
 	public void unbind() {
-		if (hasColor)                             	// IF Vertices Have Color
+		if (hasColor)                                // IF Vertices Have Color
 			gl.glDisableClientState(GL10.GL_COLOR_ARRAY);  // Clear Color State
 
-		if (hasTexCoords)                         	// IF Vertices Have Texture Coords
+		if (hasTexCoords)                            // IF Vertices Have Texture Coords
 			gl.glDisableClientState(GL10.GL_TEXTURE_COORD_ARRAY);  // Clear Texture Coords State
 
-		if (hasNormals)                           	// IF Vertices Have Normals
+		if (hasNormals)                            // IF Vertices Have Normals
 			gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);  // Clear Normals State
 	}
 
@@ -174,32 +197,32 @@ public class Vertices {
 	// R: [none]
 	public void drawFull(int primitiveType, int offset, int numVertices) {
 		gl.glEnableClientState(GL10.GL_VERTEX_ARRAY); // Enable Position in Vertices
-		vertices.position(0);                     	// Set Vertex Buffer to Position
+		vertices.position(0);                        // Set Vertex Buffer to Position
 		gl.glVertexPointer(positionCnt, GL10.GL_FLOAT, vertexSize, vertices);  // Set Vertex Pointer
 
-		if (hasColor) {                          	// IF Vertices Have Color
+		if (hasColor) {                            // IF Vertices Have Color
 			gl.glEnableClientState(GL10.GL_COLOR_ARRAY);  // Enable Color in Vertices
-			vertices.position(positionCnt);        	// Set Vertex Buffer to Color
+			vertices.position(positionCnt);            // Set Vertex Buffer to Color
 			gl.glColorPointer(COLOR_CNT, GL10.GL_FLOAT, vertexSize, vertices);  // Set Color Pointer
 		}
 
-		if (hasTexCoords) {                      	// IF Vertices Have Texture Coords
+		if (hasTexCoords) {                        // IF Vertices Have Texture Coords
 			gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);  // Enable Texture Coords in Vertices
 			vertices.position(positionCnt + (hasColor ? COLOR_CNT : 0));  // Set Vertex Buffer to Texture Coords (NOTE: position based on whether color is also specified)
 			gl.glTexCoordPointer(TEXCOORD_CNT, GL10.GL_FLOAT, vertexSize, vertices);  // Set Texture Coords Pointer
 		}
 
-		if (indices != null) {                   	// IF Indices Exist
-			indices.position(offset);              	// Set Index Buffer to Specified Offset
+		if (indices != null) {                    // IF Indices Exist
+			indices.position(offset);                // Set Index Buffer to Specified Offset
 			gl.glDrawElements(primitiveType, numVertices, GL10.GL_UNSIGNED_SHORT, indices);  // Draw Indexed
-		} else {                                     	// ELSE No Indices Exist
+		} else {                                        // ELSE No Indices Exist
 			gl.glDrawArrays(primitiveType, offset, numVertices);  // Draw Direct (Array)
 		}
 
-		if (hasTexCoords)                         	// IF Vertices Have Texture Coords
+		if (hasTexCoords)                            // IF Vertices Have Texture Coords
 			gl.glDisableClientState(GL10.GL_TEXTURE_COORD_ARRAY);  // Clear Texture Coords State
 
-		if (hasColor)                             	// IF Vertices Have Color
+		if (hasColor)                                // IF Vertices Have Color
 			gl.glDisableClientState(GL10.GL_COLOR_ARRAY);  // Clear Color State
 	}
 
@@ -213,13 +236,13 @@ public class Vertices {
 	//    nx, ny, nz - the x,y,z normal to set in buffer
 	// R: [none]
 	void setVtxPosition(int vtxIdx, float x, float y) {
-		int index = vtxIdx * vertexStride;          	// Calculate Actual Index
+		int index = vtxIdx * vertexStride;            // Calculate Actual Index
 		vertices.put(index + 0, Float.floatToRawIntBits(x));  // Set X
 		vertices.put(index + 1, Float.floatToRawIntBits(y));  // Set Y
 	}
 
 	void setVtxPosition(int vtxIdx, float x, float y, float z) {
-		int index = vtxIdx * vertexStride;          	// Calculate Actual Index
+		int index = vtxIdx * vertexStride;            // Calculate Actual Index
 		vertices.put(index + 0, Float.floatToRawIntBits(x));  // Set X
 		vertices.put(index + 1, Float.floatToRawIntBits(y));  // Set Y
 		vertices.put(index + 2, Float.floatToRawIntBits(z));  // Set Z
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/plot/ZoomTracker.java b/android-app/src/main/java/org/solovyev/android/calculator/plot/ZoomTracker.java
index a1163d4d..7545519b 100755
--- a/android-app/src/main/java/org/solovyev/android/calculator/plot/ZoomTracker.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/plot/ZoomTracker.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 class ZoomTracker {
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/preferences/CalculatorPreferencesActivity.java b/android-app/src/main/java/org/solovyev/android/calculator/preferences/CalculatorPreferencesActivity.java
index be9c9950..64ece97d 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/preferences/CalculatorPreferencesActivity.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/preferences/CalculatorPreferencesActivity.java
@@ -1,6 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.preferences;
@@ -14,13 +31,17 @@ import android.preference.Preference;
 import android.preference.PreferenceManager;
 import android.util.Log;
 import android.widget.Toast;
+
 import com.actionbarsherlock.app.SherlockPreferenceActivity;
+
 import net.robotmedia.billing.BillingController;
 import net.robotmedia.billing.IBillingObserver;
 import net.robotmedia.billing.ResponseCode;
 import net.robotmedia.billing.helper.AbstractBillingObserver;
 import net.robotmedia.billing.model.Transaction;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.Activities;
 import org.solovyev.android.App;
 import org.solovyev.android.ads.AdsController;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/preferences/CalculatorPurchaseDialogActivity.java b/android-app/src/main/java/org/solovyev/android/calculator/preferences/CalculatorPurchaseDialogActivity.java
index b9f16efc..60ffdbde 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/preferences/CalculatorPurchaseDialogActivity.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/preferences/CalculatorPurchaseDialogActivity.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.preferences;
 
 import android.app.Activity;
@@ -8,10 +30,14 @@ import android.util.Log;
 import android.view.View;
 import android.widget.TextView;
 import android.widget.Toast;
+
 import com.actionbarsherlock.app.SherlockFragmentActivity;
+
 import net.robotmedia.billing.BillingController;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.ads.AdsController;
 import org.solovyev.android.calculator.CalculatorApplication;
 import org.solovyev.android.calculator.CalculatorFragment;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/view/CalculatorAdditionalTitle.java b/android-app/src/main/java/org/solovyev/android/calculator/view/CalculatorAdditionalTitle.java
index ea526202..b489b074 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/view/CalculatorAdditionalTitle.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/view/CalculatorAdditionalTitle.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.view;
@@ -10,8 +26,10 @@ import android.content.Context;
 import android.content.SharedPreferences;
 import android.util.AttributeSet;
 import android.widget.TextView;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.Locator;
 import org.solovyev.android.calculator.model.AndroidCalculatorEngine;
 
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/view/OnDragListenerVibrator.java b/android-app/src/main/java/org/solovyev/android/calculator/view/OnDragListenerVibrator.java
index d5236724..85f10bb8 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/view/OnDragListenerVibrator.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/view/OnDragListenerVibrator.java
@@ -1,9 +1,33 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.view;
 
 import android.content.SharedPreferences;
 import android.os.Vibrator;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.view.VibratorContainer;
 import org.solovyev.android.view.drag.DragButton;
 import org.solovyev.android.view.drag.OnDragListener;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/wizard/AppWizardFlow.java b/android-app/src/main/java/org/solovyev/android/calculator/wizard/AppWizardFlow.java
index e930c5c2..e9022cb1 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/wizard/AppWizardFlow.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/wizard/AppWizardFlow.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.wizard;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import java.util.ArrayList;
 import java.util.List;
 
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/wizard/CalculatorLayout.java b/android-app/src/main/java/org/solovyev/android/calculator/wizard/CalculatorLayout.java
index 758dcf74..53af8d2f 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/wizard/CalculatorLayout.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/wizard/CalculatorLayout.java
@@ -1,6 +1,29 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.wizard;
 
 import android.content.SharedPreferences;
+
 import org.solovyev.android.calculator.CalculatorPreferences;
 import org.solovyev.android.calculator.R;
 
@@ -16,14 +39,14 @@ import static org.solovyev.android.calculator.CalculatorPreferences.Gui.Layout.m
  */
 enum CalculatorLayout {
 
-	big_buttons(R.string.cpp_wizard_layout_big_buttons){
+	big_buttons(R.string.cpp_wizard_layout_big_buttons) {
 		@Override
 		protected void apply(@Nonnull SharedPreferences preferences) {
 			CalculatorPreferences.Gui.layout.putPreference(preferences, main_calculator_mobile);
 		}
 	},
 
-	optimized(R.string.cpp_wizard_layout_optimized){
+	optimized(R.string.cpp_wizard_layout_optimized) {
 		@Override
 		protected void apply(@Nonnull SharedPreferences preferences) {
 			CalculatorPreferences.Gui.layout.putPreference(preferences, main_calculator);
@@ -43,13 +66,13 @@ enum CalculatorLayout {
 	protected abstract void apply(@Nonnull SharedPreferences preferences);
 
 	@Nonnull
-	static CalculatorLayout getDefaultLayout(){
+	static CalculatorLayout getDefaultLayout() {
 		return big_buttons;
 	}
 
 	@Nonnull
 	static CalculatorLayout fromGuiLayout(@Nonnull CalculatorPreferences.Gui.Layout layout) {
-		if(layout.isOptimized()) {
+		if (layout.isOptimized()) {
 			return optimized;
 		} else {
 			return big_buttons;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/wizard/CalculatorMode.java b/android-app/src/main/java/org/solovyev/android/calculator/wizard/CalculatorMode.java
index 0c95a00c..9b5294cf 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/wizard/CalculatorMode.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/wizard/CalculatorMode.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.wizard;
 
 import android.content.SharedPreferences;
 import jscl.AngleUnit;
+
 import org.solovyev.android.calculator.CalculatorPreferences;
 import org.solovyev.android.calculator.R;
 import org.solovyev.android.calculator.model.AndroidCalculatorEngine;
@@ -12,10 +35,10 @@ import static org.solovyev.android.calculator.CalculatorPreferences.Gui.Layout.m
 import static org.solovyev.android.calculator.CalculatorPreferences.Gui.Layout.main_calculator_mobile;
 
 /**
-* User: serso
-* Date: 6/17/13
-* Time: 9:30 PM
-*/
+ * User: serso
+ * Date: 6/17/13
+ * Time: 9:30 PM
+ */
 enum CalculatorMode {
 
 	simple(R.string.cpp_wizard_mode_simple) {
@@ -63,7 +86,7 @@ enum CalculatorMode {
 	protected abstract void apply(@Nonnull SharedPreferences preferences);
 
 	@Nonnull
-	static CalculatorMode getDefaultMode(){
+	static CalculatorMode getDefaultMode() {
 		return engineer;
 	}
 
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/wizard/CalculatorWizardActivity.java b/android-app/src/main/java/org/solovyev/android/calculator/wizard/CalculatorWizardActivity.java
index a8d9e9d0..69751b83 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/wizard/CalculatorWizardActivity.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/wizard/CalculatorWizardActivity.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.wizard;
 
 import android.content.Context;
@@ -8,6 +30,7 @@ import android.support.v4.app.FragmentActivity;
 import android.support.v4.app.FragmentManager;
 import android.support.v4.app.FragmentTransaction;
 import android.view.View;
+
 import org.solovyev.android.calculator.R;
 
 import javax.annotation.Nonnull;
@@ -67,7 +90,7 @@ public final class CalculatorWizardActivity extends FragmentActivity {
 		flow = Wizards.getWizardFlow(wizardName != null ? wizardName : Wizards.FIRST_TIME_WIZARD);
 
 		WizardStep step = null;
-		if(stepName != null) {
+		if (stepName != null) {
 			step = flow.getStep(stepName);
 		}
 
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/wizard/ChooseLayoutWizardStep.java b/android-app/src/main/java/org/solovyev/android/calculator/wizard/ChooseLayoutWizardStep.java
index 0a138f0c..191ee8a0 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/wizard/ChooseLayoutWizardStep.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/wizard/ChooseLayoutWizardStep.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.wizard;
 
 import android.os.Bundle;
@@ -6,6 +28,7 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.RadioButton;
+
 import org.solovyev.android.calculator.R;
 
 import javax.annotation.Nonnull;
@@ -50,7 +73,7 @@ public class ChooseLayoutWizardStep extends Fragment {
 	public void onCreate(Bundle savedInstanceState) {
 		super.onCreate(savedInstanceState);
 
-		if(savedInstanceState != null) {
+		if (savedInstanceState != null) {
 			layout = (CalculatorLayout) savedInstanceState.getSerializable(LAYOUT);
 		}
 
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/wizard/ChooseModeWizardStep.java b/android-app/src/main/java/org/solovyev/android/calculator/wizard/ChooseModeWizardStep.java
index 13b6df81..0b020fbc 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/wizard/ChooseModeWizardStep.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/wizard/ChooseModeWizardStep.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.wizard;
 
 import android.os.Bundle;
@@ -6,6 +28,7 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.RadioButton;
+
 import org.solovyev.android.calculator.R;
 
 import javax.annotation.Nonnull;
@@ -50,7 +73,7 @@ public class ChooseModeWizardStep extends Fragment {
 	public void onCreate(Bundle savedInstanceState) {
 		super.onCreate(savedInstanceState);
 
-		if(savedInstanceState != null) {
+		if (savedInstanceState != null) {
 			mode = (CalculatorMode) savedInstanceState.getSerializable(MODE);
 		}
 
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/wizard/DragButtonWizardStep.java b/android-app/src/main/java/org/solovyev/android/calculator/wizard/DragButtonWizardStep.java
index 42a9143a..a1810847 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/wizard/DragButtonWizardStep.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/wizard/DragButtonWizardStep.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.wizard;
 
 import android.os.Bundle;
@@ -7,6 +29,7 @@ import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.TextView;
+
 import org.solovyev.android.calculator.R;
 import org.solovyev.android.view.drag.DirectionDragButton;
 import org.solovyev.android.view.drag.DragButton;
@@ -16,6 +39,7 @@ import org.solovyev.common.math.Point2d;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import java.util.Arrays;
 
 public class DragButtonWizardStep extends Fragment {
@@ -119,7 +143,7 @@ public class DragButtonWizardStep extends Fragment {
 	private class DragButtonOnClickListener implements View.OnClickListener {
 		@Override
 		public void onClick(View v) {
-			if(action == DragButtonAction.center || action == DragButtonAction.end) {
+			if (action == DragButtonAction.center || action == DragButtonAction.end) {
 				setNextAction();
 			}
 		}
@@ -135,7 +159,7 @@ public class DragButtonWizardStep extends Fragment {
 										@Nonnull DragButton dragButton,
 										@Nonnull Point2d startPoint2d,
 										@Nonnull MotionEvent motionEvent) {
-			if(action.dragDirection == dragDirection) {
+			if (action.dragDirection == dragDirection) {
 				setNextAction();
 				return true;
 			}
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/wizard/FinishWizardConfirmationDialog.java b/android-app/src/main/java/org/solovyev/android/calculator/wizard/FinishWizardConfirmationDialog.java
index f10fd8f7..b360a186 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/wizard/FinishWizardConfirmationDialog.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/wizard/FinishWizardConfirmationDialog.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.wizard;
 
 import android.app.AlertDialog;
@@ -31,7 +53,7 @@ public class FinishWizardConfirmationDialog extends DialogFragment {
 		return b.create();
 	}
 
-	public static void show(@Nonnull CalculatorWizardActivity activity){
+	public static void show(@Nonnull CalculatorWizardActivity activity) {
 		AndroidSherlockUtils.showDialog(new FinishWizardConfirmationDialog(), FinishWizardConfirmationDialog.class.getSimpleName(), activity.getSupportFragmentManager());
 	}
 }
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/wizard/ListWizardFlow.java b/android-app/src/main/java/org/solovyev/android/calculator/wizard/ListWizardFlow.java
index 46842746..c3567840 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/wizard/ListWizardFlow.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/wizard/ListWizardFlow.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.wizard;
 
 import com.google.common.base.Predicate;
@@ -5,6 +27,7 @@ import com.google.common.collect.Iterables;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import java.util.List;
 
 /**
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/wizard/OnScreenCalculatorWizardStep.java b/android-app/src/main/java/org/solovyev/android/calculator/wizard/OnScreenCalculatorWizardStep.java
index cf24d912..69a0d2a7 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/wizard/OnScreenCalculatorWizardStep.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/wizard/OnScreenCalculatorWizardStep.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.wizard;
 
 import android.os.Bundle;
@@ -6,6 +28,7 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.CheckBox;
+
 import org.solovyev.android.calculator.CalculatorPreferences;
 import org.solovyev.android.calculator.R;
 
@@ -40,7 +63,7 @@ public class OnScreenCalculatorWizardStep extends Fragment {
 	public void onCreate(Bundle savedInstanceState) {
 		super.onCreate(savedInstanceState);
 
-		if(savedInstanceState != null && savedInstanceState.containsKey(ONSCREEN_CALCULATOR_ENABLED)) {
+		if (savedInstanceState != null && savedInstanceState.containsKey(ONSCREEN_CALCULATOR_ENABLED)) {
 			onscreenCalculatorEnabled = savedInstanceState.getBoolean(ONSCREEN_CALCULATOR_ENABLED);
 		}
 
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/wizard/WelcomeWizardStep.java b/android-app/src/main/java/org/solovyev/android/calculator/wizard/WelcomeWizardStep.java
index 05988262..c209e02d 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/wizard/WelcomeWizardStep.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/wizard/WelcomeWizardStep.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.wizard;
 
 import android.os.Bundle;
@@ -5,6 +27,7 @@ import android.support.v4.app.Fragment;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+
 import org.solovyev.android.calculator.R;
 
 /**
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/wizard/WizardFlow.java b/android-app/src/main/java/org/solovyev/android/calculator/wizard/WizardFlow.java
index 3c0c40e8..a85bcb98 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/wizard/WizardFlow.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/wizard/WizardFlow.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.wizard;
 
 import javax.annotation.Nonnull;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/wizard/WizardStep.java b/android-app/src/main/java/org/solovyev/android/calculator/wizard/WizardStep.java
index 4faf138a..f063eca8 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/wizard/WizardStep.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/wizard/WizardStep.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.wizard;
 
 import android.content.SharedPreferences;
@@ -5,6 +27,7 @@ import android.content.res.Configuration;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
 import android.support.v4.app.Fragment;
+
 import org.solovyev.android.App;
 import org.solovyev.android.Views;
 import org.solovyev.android.calculator.CalculatorApplication;
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/wizard/Wizards.java b/android-app/src/main/java/org/solovyev/android/calculator/wizard/Wizards.java
index 230aaca3..536df764 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/wizard/Wizards.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/wizard/Wizards.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.wizard;
 
 import android.content.SharedPreferences;
 import android.preference.PreferenceManager;
+
 import org.solovyev.android.calculator.CalculatorApplication;
 
 import javax.annotation.Nonnull;
@@ -29,9 +52,9 @@ public final class Wizards {
 
 	@Nonnull
 	public static WizardFlow getWizardFlow(@Nonnull String name) {
-		if(FIRST_TIME_WIZARD.equals(name)) {
+		if (FIRST_TIME_WIZARD.equals(name)) {
 			return newFirstTimeWizardFlow();
-		} else if(DEFAULT_WIZARD_FLOW.equals(name)) {
+		} else if (DEFAULT_WIZARD_FLOW.equals(name)) {
 			return newDefaultWizardFlow();
 		} else {
 			throw new IllegalArgumentException("Wizard flow " + name + " is not supported");
diff --git a/android-app/src/main/java/org/solovyev/android/fragments/FragmentUtils.java b/android-app/src/main/java/org/solovyev/android/fragments/FragmentUtils.java
index 395e1a71..08a47a75 100644
--- a/android-app/src/main/java/org/solovyev/android/fragments/FragmentUtils.java
+++ b/android-app/src/main/java/org/solovyev/android/fragments/FragmentUtils.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.fragments;
 
 import android.os.Bundle;
@@ -5,9 +27,12 @@ import android.support.v4.app.Fragment;
 import android.support.v4.app.FragmentActivity;
 import android.support.v4.app.FragmentManager;
 import android.support.v4.app.FragmentTransaction;
+
 import com.actionbarsherlock.app.SherlockFragmentActivity;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.common.collections.Collections;
 
 import java.util.List;
diff --git a/android-app/src/test/java/org/solovyev/android/AndroidNumeralBaseTest.java b/android-app/src/test/java/org/solovyev/android/AndroidNumeralBaseTest.java
index 8f168b87..bb8a8035 100644
--- a/android-app/src/test/java/org/solovyev/android/AndroidNumeralBaseTest.java
+++ b/android-app/src/test/java/org/solovyev/android/AndroidNumeralBaseTest.java
@@ -1,12 +1,36 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android;
 
 import junit.framework.Assert;
+
 import org.junit.Test;
 import org.solovyev.android.calculator.units.CalculatorNumeralBase;
 import org.solovyev.common.units.Unit;
 import org.solovyev.common.units.UnitConverter;
 
 import javax.annotation.Nonnull;
+
 import java.util.Date;
 import java.util.Random;
 
diff --git a/android-app/src/test/java/org/solovyev/android/calculator/AndroidCalculatorEditorViewTest.java b/android-app/src/test/java/org/solovyev/android/calculator/AndroidCalculatorEditorViewTest.java
index b507d7b8..1afc8854 100644
--- a/android-app/src/test/java/org/solovyev/android/calculator/AndroidCalculatorEditorViewTest.java
+++ b/android-app/src/test/java/org/solovyev/android/calculator/AndroidCalculatorEditorViewTest.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import java.util.Date;
@@ -30,7 +52,7 @@ public class AndroidCalculatorEditorViewTest {
 	@Before
 	public void setUp() throws Exception {
 /*        CalculatorActivity context = new CalculatorActivity();
-        CalculatorTestUtils.initViews(context);*/
+		CalculatorTestUtils.initViews(context);*/
 	}
 
 	@Test
@@ -40,50 +62,50 @@ public class AndroidCalculatorEditorViewTest {
 
 	@Test
 	public void testAsyncWork() throws Exception {
-        final int threadNum = 10;
-        final int count = 10;
-        final int maxTextLength = 100;
+		final int threadNum = 10;
+		final int count = 10;
+		final int maxTextLength = 100;
 
-        final Random random = new Random(new Date().getTime());
-        final CountDownLatch startLatchLatch = new CountDownLatch(threadNum);
-        final CountDownLatch finishLatch = new CountDownLatch(threadNum * count);
-        final AtomicBoolean error = new AtomicBoolean(false);
+		final Random random = new Random(new Date().getTime());
+		final CountDownLatch startLatchLatch = new CountDownLatch(threadNum);
+		final CountDownLatch finishLatch = new CountDownLatch(threadNum * count);
+		final AtomicBoolean error = new AtomicBoolean(false);
 
-        for ( int i = 0; i < threadNum; i++ ) {
-            new Thread(new Runnable() {
-                @Override
-                public void run() {
-                    try {
-                        startLatchLatch.await();
-                    } catch (InterruptedException e) {
-                        System.out.println(e);
-                        error.set(true);
-                        for ( int j = 0; j < count; j++ ) {
-                            finishLatch.countDown();
-                        }
-                        return;
-                    }
+		for (int i = 0; i < threadNum; i++) {
+			new Thread(new Runnable() {
+				@Override
+				public void run() {
+					try {
+						startLatchLatch.await();
+					} catch (InterruptedException e) {
+						System.out.println(e);
+						error.set(true);
+						for (int j = 0; j < count; j++) {
+							finishLatch.countDown();
+						}
+						return;
+					}
 
-                    for ( int j = 0; j < count; j++ ) {
-                        try {
-                            int textLength = random.nextInt(maxTextLength);
-                            Locator.getInstance().getEditor().insert(Strings.generateRandomString(textLength), textLength);
-                        } catch (Throwable e) {
-                            System.out.println(e);
-                            error.set(true);
-                        } finally {
-                            finishLatch.countDown();
-                        }
-                    }
-                }
-            }).start();
-            startLatchLatch.countDown();
-        }
+					for (int j = 0; j < count; j++) {
+						try {
+							int textLength = random.nextInt(maxTextLength);
+							Locator.getInstance().getEditor().insert(Strings.generateRandomString(textLength), textLength);
+						} catch (Throwable e) {
+							System.out.println(e);
+							error.set(true);
+						} finally {
+							finishLatch.countDown();
+						}
+					}
+				}
+			}).start();
+			startLatchLatch.countDown();
+		}
 
-        if ( finishLatch.await(60, TimeUnit.SECONDS) ) {
-            Assert.assertFalse(error.get());
-        } else {
-            Assert.fail("Too long execution!");
-        }
+		if (finishLatch.await(60, TimeUnit.SECONDS)) {
+			Assert.assertFalse(error.get());
+		} else {
+			Assert.fail("Too long execution!");
+		}
 	}
 }
diff --git a/android-app/src/test/java/org/solovyev/android/calculator/CalculatorTestUtils.java b/android-app/src/test/java/org/solovyev/android/calculator/CalculatorTestUtils.java
index 1944444f..b9e7d9fd 100644
--- a/android-app/src/test/java/org/solovyev/android/calculator/CalculatorTestUtils.java
+++ b/android-app/src/test/java/org/solovyev/android/calculator/CalculatorTestUtils.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import android.content.Context;
 import jscl.JsclMathEngine;
+
 import org.mockito.Mockito;
 import org.solovyev.android.calculator.external.CalculatorExternalListenersContainer;
 import org.solovyev.android.calculator.history.CalculatorHistory;
diff --git a/android-app/src/test/java/org/solovyev/android/calculator/TestCalculatorApplication.java b/android-app/src/test/java/org/solovyev/android/calculator/TestCalculatorApplication.java
index 941b15c9..3eb3e16f 100644
--- a/android-app/src/test/java/org/solovyev/android/calculator/TestCalculatorApplication.java
+++ b/android-app/src/test/java/org/solovyev/android/calculator/TestCalculatorApplication.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 /**
diff --git a/android-app/src/test/java/org/solovyev/android/calculator/TextHighlighterTest.java b/android-app/src/test/java/org/solovyev/android/calculator/TextHighlighterTest.java
index f2c1994d..09b0e378 100644
--- a/android-app/src/test/java/org/solovyev/android/calculator/TextHighlighterTest.java
+++ b/android-app/src/test/java/org/solovyev/android/calculator/TextHighlighterTest.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
@@ -9,6 +25,7 @@ package org.solovyev.android.calculator;
 import android.graphics.Color;
 import jscl.MathEngine;
 import jscl.NumeralBase;
+
 import org.junit.Before;
 import org.junit.Test;
 import org.solovyev.android.calculator.text.TextProcessor;
diff --git a/android-app/src/test/java/org/solovyev/android/calculator/history/HistoryUtilsTest.java b/android-app/src/test/java/org/solovyev/android/calculator/history/HistoryUtilsTest.java
index a545706d..0d637472 100644
--- a/android-app/src/test/java/org/solovyev/android/calculator/history/HistoryUtilsTest.java
+++ b/android-app/src/test/java/org/solovyev/android/calculator/history/HistoryUtilsTest.java
@@ -1,12 +1,29 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.history;
 
 import junit.framework.Assert;
+
 import org.junit.Test;
 import org.solovyev.android.calculator.CalculatorDisplayViewState;
 import org.solovyev.android.calculator.CalculatorDisplayViewStateImpl;
diff --git a/android-app/src/test/java/org/solovyev/android/calculator/model/VarTest.java b/android-app/src/test/java/org/solovyev/android/calculator/model/VarTest.java
index a99e920f..26bd070c 100644
--- a/android-app/src/test/java/org/solovyev/android/calculator/model/VarTest.java
+++ b/android-app/src/test/java/org/solovyev/android/calculator/model/VarTest.java
@@ -1,12 +1,29 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.model;
 
 import jscl.math.function.IConstant;
+
 import org.junit.Test;
 import org.simpleframework.xml.Serializer;
 import org.simpleframework.xml.core.Persister;
diff --git a/android-app/src/test/java/org/solovyev/android/calculator/plot/CalculatorGraph2dViewTest.java b/android-app/src/test/java/org/solovyev/android/calculator/plot/CalculatorGraph2dViewTest.java
index e76b81ce..63bbe14c 100644
--- a/android-app/src/test/java/org/solovyev/android/calculator/plot/CalculatorGraph2dViewTest.java
+++ b/android-app/src/test/java/org/solovyev/android/calculator/plot/CalculatorGraph2dViewTest.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import java.text.DecimalFormat;
diff --git a/android-app/src/test/java/org/solovyev/android/calculator/wizard/CalculatorWizardActivityTest.java b/android-app/src/test/java/org/solovyev/android/calculator/wizard/CalculatorWizardActivityTest.java
index e3b561f3..22e342a9 100644
--- a/android-app/src/test/java/org/solovyev/android/calculator/wizard/CalculatorWizardActivityTest.java
+++ b/android-app/src/test/java/org/solovyev/android/calculator/wizard/CalculatorWizardActivityTest.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.wizard;
 
 import android.content.Intent;
diff --git a/android-app/src/test/java/org/solovyev/android/calculator/wizard/OnScreenCalculatorWizardStepTest.java b/android-app/src/test/java/org/solovyev/android/calculator/wizard/OnScreenCalculatorWizardStepTest.java
index e6a81689..1ff2db9d 100644
--- a/android-app/src/test/java/org/solovyev/android/calculator/wizard/OnScreenCalculatorWizardStepTest.java
+++ b/android-app/src/test/java/org/solovyev/android/calculator/wizard/OnScreenCalculatorWizardStepTest.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.wizard;
 
 import android.content.SharedPreferences;
diff --git a/android-app/src/test/java/org/solovyev/android/calculator/wizard/WizardStepTest.java b/android-app/src/test/java/org/solovyev/android/calculator/wizard/WizardStepTest.java
index 3f294fd1..65ff071d 100644
--- a/android-app/src/test/java/org/solovyev/android/calculator/wizard/WizardStepTest.java
+++ b/android-app/src/test/java/org/solovyev/android/calculator/wizard/WizardStepTest.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.wizard;
 
 import android.app.Activity;
diff --git a/core/pom.xml b/core/pom.xml
index eb919a22..8e610f52 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<parent>
diff --git a/core/src/main/java/org/solovyev/acraanalyzer/AcraAnalyzer.java b/core/src/main/java/org/solovyev/acraanalyzer/AcraAnalyzer.java
index 2cd4e928..887539bd 100644
--- a/core/src/main/java/org/solovyev/acraanalyzer/AcraAnalyzer.java
+++ b/core/src/main/java/org/solovyev/acraanalyzer/AcraAnalyzer.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.acraanalyzer;
 
 import org.apache.commons.cli.*;
@@ -5,6 +27,7 @@ import org.solovyev.common.text.Strings;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import java.io.File;
 import java.io.FileNotFoundException;
 import java.util.*;
diff --git a/core/src/main/java/org/solovyev/android/calculator/AbstractCalculatorMathRegistry.java b/core/src/main/java/org/solovyev/android/calculator/AbstractCalculatorMathRegistry.java
index 42263f35..451523ba 100644
--- a/core/src/main/java/org/solovyev/android/calculator/AbstractCalculatorMathRegistry.java
+++ b/core/src/main/java/org/solovyev/android/calculator/AbstractCalculatorMathRegistry.java
@@ -1,13 +1,30 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.common.JBuilder;
 import org.solovyev.common.math.MathEntity;
 import org.solovyev.common.math.MathRegistry;
diff --git a/core/src/main/java/org/solovyev/android/calculator/AbstractFixableError.java b/core/src/main/java/org/solovyev/android/calculator/AbstractFixableError.java
index 28385db8..ad433e9a 100644
--- a/core/src/main/java/org/solovyev/android/calculator/AbstractFixableError.java
+++ b/core/src/main/java/org/solovyev/android/calculator/AbstractFixableError.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nullable;
diff --git a/core/src/main/java/org/solovyev/android/calculator/AbstractNumberBuilder.java b/core/src/main/java/org/solovyev/android/calculator/AbstractNumberBuilder.java
index ebc8e4fb..18777fb8 100644
--- a/core/src/main/java/org/solovyev/android/calculator/AbstractNumberBuilder.java
+++ b/core/src/main/java/org/solovyev/android/calculator/AbstractNumberBuilder.java
@@ -1,14 +1,32 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
 
 import jscl.NumeralBase;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.math.MathType;
 import org.solovyev.common.text.Strings;
 
diff --git a/core/src/main/java/org/solovyev/android/calculator/Calculator.java b/core/src/main/java/org/solovyev/android/calculator/Calculator.java
index 5790ef02..70167194 100644
--- a/core/src/main/java/org/solovyev/android/calculator/Calculator.java
+++ b/core/src/main/java/org/solovyev/android/calculator/Calculator.java
@@ -1,9 +1,33 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import jscl.NumeralBase;
 import jscl.math.Generic;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.history.CalculatorHistoryState;
 import org.solovyev.android.calculator.jscl.JsclOperation;
 import org.solovyev.common.history.HistoryControl;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorClipboard.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorClipboard.java
index 688ba9ba..2eb4b16e 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorClipboard.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorClipboard.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorConversionEventData.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorConversionEventData.java
index 0502e61e..202152ed 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorConversionEventData.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorConversionEventData.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import jscl.NumeralBase;
 import jscl.math.Generic;
+
 import javax.annotation.Nonnull;
 
 /**
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorConversionEventDataImpl.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorConversionEventDataImpl.java
index e8294b35..bcaa9d3b 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorConversionEventDataImpl.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorConversionEventDataImpl.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import jscl.NumeralBase;
 import jscl.math.Generic;
+
 import javax.annotation.Nonnull;
 
 /**
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplay.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplay.java
index 658726e6..5585e424 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplay.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplay.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayChangeEventData.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayChangeEventData.java
index e993b016..8b8f2091 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayChangeEventData.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayChangeEventData.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 /**
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayChangeEventDataImpl.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayChangeEventDataImpl.java
index d35d0b66..e384bb11 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayChangeEventDataImpl.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayChangeEventDataImpl.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayImpl.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayImpl.java
index edc5f47e..2be3bf58 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayImpl.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayImpl.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayView.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayView.java
index 8f4359f0..cc4d929b 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayView.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayView.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayViewState.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayViewState.java
index 325c2654..65c21d15 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayViewState.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayViewState.java
@@ -1,8 +1,32 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import jscl.math.Generic;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.jscl.JsclOperation;
 
 import java.io.Serializable;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayViewStateImpl.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayViewStateImpl.java
index a529d6f1..613dcdc5 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayViewStateImpl.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorDisplayViewStateImpl.java
@@ -1,8 +1,32 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import jscl.math.Generic;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.jscl.JsclOperation;
 import org.solovyev.common.text.Strings;
 
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorEditor.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorEditor.java
index d08599de..477e1783 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorEditor.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorEditor.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.common.gui.CursorControl;
 
 /**
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorChangeEventData.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorChangeEventData.java
index 07a46551..3cd90c21 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorChangeEventData.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorChangeEventData.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 /**
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorChangeEventDataImpl.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorChangeEventDataImpl.java
index 2ad13330..9786155f 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorChangeEventDataImpl.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorChangeEventDataImpl.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorImpl.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorImpl.java
index 2606af90..6c563ba7 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorImpl.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorImpl.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.history.CalculatorHistoryState;
 import org.solovyev.android.calculator.history.EditorHistoryState;
 import org.solovyev.common.gui.CursorControl;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorView.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorView.java
index e0d62899..dbf5a64e 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorView.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorView.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorViewState.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorViewState.java
index ca33b7dd..fe9295ef 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorViewState.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorViewState.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorViewStateImpl.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorViewStateImpl.java
index 8392f5fd..ec6c328f 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorViewStateImpl.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorEditorViewStateImpl.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorEngine.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorEngine.java
index 4f97d9ec..76520a79 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorEngine.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorEngine.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import jscl.AngleUnit;
@@ -6,6 +28,7 @@ import jscl.NumeralBase;
 import jscl.math.function.Function;
 import jscl.math.function.IConstant;
 import jscl.math.operator.Operator;
+
 import javax.annotation.Nonnull;
 
 import java.text.DecimalFormatSymbols;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorEngineControl.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorEngineControl.java
index 43e2614d..104ed5b6 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorEngineControl.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorEngineControl.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorEngineImpl.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorEngineImpl.java
index 9660ab9c..120da439 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorEngineImpl.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorEngineImpl.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import jscl.AngleUnit;
@@ -9,6 +31,7 @@ import jscl.math.function.Function;
 import jscl.math.function.IConstant;
 import jscl.math.operator.Operator;
 import jscl.text.ParseException;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorEvalException.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorEvalException.java
index e4c0a2d6..76febc3a 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorEvalException.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorEvalException.java
@@ -1,12 +1,29 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
+
 import org.solovyev.common.msg.Message;
 import org.solovyev.common.msg.MessageLevel;
 
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorEvaluationEventData.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorEvaluationEventData.java
index 1596e821..89522928 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorEvaluationEventData.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorEvaluationEventData.java
@@ -1,6 +1,29 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.jscl.JsclOperation;
 
 /**
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorEvaluationEventDataImpl.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorEvaluationEventDataImpl.java
index 059b1689..bb7d8dea 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorEvaluationEventDataImpl.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorEvaluationEventDataImpl.java
@@ -1,6 +1,29 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.jscl.JsclOperation;
 
 /**
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorEventContainer.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorEventContainer.java
index 7437a44a..e17c0867 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorEventContainer.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorEventContainer.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorEventData.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorEventData.java
index dd130a9e..aae48645 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorEventData.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorEventData.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorEventDataImpl.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorEventDataImpl.java
index 5be2624e..20079fbb 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorEventDataImpl.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorEventDataImpl.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorEventHolder.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorEventHolder.java
index 592ebac2..60acc2ad 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorEventHolder.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorEventHolder.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorEventListener.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorEventListener.java
index f62e482a..3ececccb 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorEventListener.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorEventListener.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorEventType.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorEventType.java
index d3009267..cb59d5fd 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorEventType.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorEventType.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorFailure.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorFailure.java
index d70f0075..05ecce46 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorFailure.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorFailure.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorFailureImpl.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorFailureImpl.java
index b6754c94..e85370e5 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorFailureImpl.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorFailureImpl.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorFixableError.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorFixableError.java
index aad3d425..1a9364e8 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorFixableError.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorFixableError.java
@@ -1,9 +1,33 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import jscl.AngleUnit;
 import jscl.text.msg.Messages;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.common.collections.Collections;
 
 import java.util.List;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorFunctionsMathRegistry.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorFunctionsMathRegistry.java
index dad15c00..c00d5c3f 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorFunctionsMathRegistry.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorFunctionsMathRegistry.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
@@ -10,8 +26,10 @@ import jscl.CustomFunctionCalculationException;
 import jscl.math.function.CustomFunction;
 import jscl.math.function.Function;
 import jscl.math.function.IFunction;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.function.FunctionBuilderAdapter;
 import org.solovyev.android.calculator.model.AFunction;
 import org.solovyev.android.calculator.model.Functions;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorImpl.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorImpl.java
index 8f0770de..87ab4ef5 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorImpl.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorImpl.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import jscl.AbstractJsclArithmeticException;
@@ -8,8 +30,10 @@ import jscl.math.function.Function;
 import jscl.math.function.IConstant;
 import jscl.math.operator.Operator;
 import jscl.text.ParseInterruptedException;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.history.CalculatorHistory;
 import org.solovyev.android.calculator.history.CalculatorHistoryState;
 import org.solovyev.android.calculator.jscl.JsclOperation;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorInput.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorInput.java
index 59e248fc..6a0ffdd5 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorInput.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorInput.java
@@ -1,6 +1,29 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.jscl.JsclOperation;
 
 /**
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorInputImpl.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorInputImpl.java
index 75532b64..131817a2 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorInputImpl.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorInputImpl.java
@@ -1,6 +1,29 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.jscl.JsclOperation;
 
 /**
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorKeyboard.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorKeyboard.java
index 3add59b9..3408d4c4 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorKeyboard.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorKeyboard.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nullable;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorKeyboardImpl.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorKeyboardImpl.java
index 89fc5d1e..4f779c04 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorKeyboardImpl.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorKeyboardImpl.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import org.solovyev.android.calculator.math.MathType;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorLocator.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorLocator.java
index 534694de..19a18282 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorLocator.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorLocator.java
@@ -1,6 +1,29 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.external.CalculatorExternalListenersContainer;
 import org.solovyev.android.calculator.history.CalculatorHistory;
 import org.solovyev.android.calculator.plot.CalculatorPlotter;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorLogger.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorLogger.java
index 2d38b8fe..47039bc5 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorLogger.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorLogger.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorMathEngine.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorMathEngine.java
index 4bb11a8c..52587d90 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorMathEngine.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorMathEngine.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import jscl.math.Generic;
 import jscl.text.ParseException;
+
 import javax.annotation.Nonnull;
 
 /**
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorMathRegistry.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorMathRegistry.java
index 01f1ab6d..7567632a 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorMathRegistry.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorMathRegistry.java
@@ -1,13 +1,30 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.common.math.MathEntity;
 import org.solovyev.common.math.MathRegistry;
 
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorMessage.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorMessage.java
index 211587de..f8cf767e 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorMessage.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorMessage.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.common.msg.AbstractMessage;
 import org.solovyev.common.msg.Message;
 import org.solovyev.common.msg.MessageType;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorMessages.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorMessages.java
index 66bcde71..c2de3808 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorMessages.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorMessages.java
@@ -1,9 +1,32 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import org.solovyev.common.msg.MessageType;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import java.util.Locale;
 import java.util.MissingResourceException;
 import java.util.ResourceBundle;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorNotifier.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorNotifier.java
index ed007e17..b0775a4e 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorNotifier.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorNotifier.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.common.msg.Message;
 import org.solovyev.common.msg.MessageType;
 
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorOperatorsMathRegistry.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorOperatorsMathRegistry.java
index 945cf5f9..7f66a46d 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorOperatorsMathRegistry.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorOperatorsMathRegistry.java
@@ -1,13 +1,31 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
 
 import jscl.math.operator.Operator;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.common.JBuilder;
 import org.solovyev.common.math.MathRegistry;
 
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorOutput.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorOutput.java
index 5e60d2ed..783a6b46 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorOutput.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorOutput.java
@@ -1,8 +1,32 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import jscl.math.Generic;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.jscl.JsclOperation;
 
 /**
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorOutputImpl.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorOutputImpl.java
index 5a6e3817..2966e8ec 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorOutputImpl.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorOutputImpl.java
@@ -1,8 +1,32 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import jscl.math.Generic;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.jscl.JsclOperation;
 
 /**
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorParseException.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorParseException.java
index 46498dad..a361d7f4 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorParseException.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorParseException.java
@@ -1,13 +1,30 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.common.msg.Message;
 import org.solovyev.common.msg.MessageLevel;
 
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorPostfixFunctionsRegistry.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorPostfixFunctionsRegistry.java
index ad478ee0..188caed4 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorPostfixFunctionsRegistry.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorPostfixFunctionsRegistry.java
@@ -1,13 +1,31 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
 
 import jscl.math.operator.Operator;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.common.JBuilder;
 import org.solovyev.common.math.MathRegistry;
 
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorPreferenceService.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorPreferenceService.java
index 0c7f21e5..bc3ea31e 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorPreferenceService.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorPreferenceService.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import jscl.AngleUnit;
 import jscl.NumeralBase;
+
 import javax.annotation.Nonnull;
 
 /**
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorSpecialButton.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorSpecialButton.java
index 2141e616..f0a430a3 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorSpecialButton.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorSpecialButton.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorUtils.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorUtils.java
index 4e3e03e8..7418cd12 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorUtils.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorUtils.java
@@ -1,8 +1,31 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import jscl.math.Generic;
 import jscl.math.function.Constant;
 import jscl.math.function.IConstant;
+
 import javax.annotation.Nonnull;
 
 import java.util.HashSet;
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorVarsRegistry.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorVarsRegistry.java
index eb03e71b..56e5b3ae 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorVarsRegistry.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorVarsRegistry.java
@@ -1,14 +1,32 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
 
 import jscl.math.function.IConstant;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.model.MathEntityBuilder;
 import org.solovyev.android.calculator.model.Var;
 import org.solovyev.android.calculator.model.Vars;
diff --git a/core/src/main/java/org/solovyev/android/calculator/Change.java b/core/src/main/java/org/solovyev/android/calculator/Change.java
index 632bee77..c2dca694 100644
--- a/core/src/main/java/org/solovyev/android/calculator/Change.java
+++ b/core/src/main/java/org/solovyev/android/calculator/Change.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/ChangeImpl.java b/core/src/main/java/org/solovyev/android/calculator/ChangeImpl.java
index 2a39fbf3..5facc258 100644
--- a/core/src/main/java/org/solovyev/android/calculator/ChangeImpl.java
+++ b/core/src/main/java/org/solovyev/android/calculator/ChangeImpl.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/ConversionFailure.java b/core/src/main/java/org/solovyev/android/calculator/ConversionFailure.java
index b081487f..2c1ea301 100644
--- a/core/src/main/java/org/solovyev/android/calculator/ConversionFailure.java
+++ b/core/src/main/java/org/solovyev/android/calculator/ConversionFailure.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/ConversionFailureImpl.java b/core/src/main/java/org/solovyev/android/calculator/ConversionFailureImpl.java
index ad4baeba..c7e65936 100644
--- a/core/src/main/java/org/solovyev/android/calculator/ConversionFailureImpl.java
+++ b/core/src/main/java/org/solovyev/android/calculator/ConversionFailureImpl.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/DialogData.java b/core/src/main/java/org/solovyev/android/calculator/DialogData.java
index 3b1877ae..0863e912 100644
--- a/core/src/main/java/org/solovyev/android/calculator/DialogData.java
+++ b/core/src/main/java/org/solovyev/android/calculator/DialogData.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.common.msg.MessageLevel;
 
 /**
diff --git a/core/src/main/java/org/solovyev/android/calculator/DummyCalculatorClipboard.java b/core/src/main/java/org/solovyev/android/calculator/DummyCalculatorClipboard.java
index 35b6f20c..9509e5ff 100644
--- a/core/src/main/java/org/solovyev/android/calculator/DummyCalculatorClipboard.java
+++ b/core/src/main/java/org/solovyev/android/calculator/DummyCalculatorClipboard.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/DummyCalculatorNotifier.java b/core/src/main/java/org/solovyev/android/calculator/DummyCalculatorNotifier.java
index 118c8a32..805dad7c 100644
--- a/core/src/main/java/org/solovyev/android/calculator/DummyCalculatorNotifier.java
+++ b/core/src/main/java/org/solovyev/android/calculator/DummyCalculatorNotifier.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.common.msg.Message;
 import org.solovyev.common.msg.MessageType;
 
diff --git a/core/src/main/java/org/solovyev/android/calculator/Editor.java b/core/src/main/java/org/solovyev/android/calculator/Editor.java
index 26861169..4f5ba61d 100644
--- a/core/src/main/java/org/solovyev/android/calculator/Editor.java
+++ b/core/src/main/java/org/solovyev/android/calculator/Editor.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
diff --git a/core/src/main/java/org/solovyev/android/calculator/FixableError.java b/core/src/main/java/org/solovyev/android/calculator/FixableError.java
index 78a22ea6..bf908cee 100644
--- a/core/src/main/java/org/solovyev/android/calculator/FixableError.java
+++ b/core/src/main/java/org/solovyev/android/calculator/FixableError.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nullable;
diff --git a/core/src/main/java/org/solovyev/android/calculator/FunctionCategory.java b/core/src/main/java/org/solovyev/android/calculator/FunctionCategory.java
index d203f626..090b6704 100644
--- a/core/src/main/java/org/solovyev/android/calculator/FunctionCategory.java
+++ b/core/src/main/java/org/solovyev/android/calculator/FunctionCategory.java
@@ -1,10 +1,34 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import jscl.math.function.ArcTrigonometric;
 import jscl.math.function.Comparison;
 import jscl.math.function.Function;
 import jscl.math.function.Trigonometric;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.common.collections.Collections;
 
 import java.util.Arrays;
diff --git a/core/src/main/java/org/solovyev/android/calculator/ListCalculatorEventContainer.java b/core/src/main/java/org/solovyev/android/calculator/ListCalculatorEventContainer.java
index 882d1003..72ac95e3 100644
--- a/core/src/main/java/org/solovyev/android/calculator/ListCalculatorEventContainer.java
+++ b/core/src/main/java/org/solovyev/android/calculator/ListCalculatorEventContainer.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.common.listeners.JListeners;
 import org.solovyev.common.listeners.Listeners;
 
@@ -49,7 +72,7 @@ public class ListCalculatorEventContainer implements CalculatorEventContainer {
 				/*long startTime = System.currentTimeMillis();*/
 				listener.onCalculatorEvent(e.getCalculatorEventData(), e.getCalculatorEventType(), e.getData());
 /*                long endTime = System.currentTimeMillis();
-                long totalTime = (endTime - startTime);
+				long totalTime = (endTime - startTime);
                 if ( totalTime > 300 ) {
                     logger.debug(TAG + "_" + e.getCalculatorEventData().getEventId(), "Started event: " + e.getCalculatorEventType() + " with data: " + e.getData() + " for: " + listener.getClass().getSimpleName());
                     logger.debug(TAG + "_" + e.getCalculatorEventData().getEventId(), "Total time, ms: " + totalTime);
diff --git a/core/src/main/java/org/solovyev/android/calculator/LiteNumberBuilder.java b/core/src/main/java/org/solovyev/android/calculator/LiteNumberBuilder.java
index 91cb6129..8cf68179 100644
--- a/core/src/main/java/org/solovyev/android/calculator/LiteNumberBuilder.java
+++ b/core/src/main/java/org/solovyev/android/calculator/LiteNumberBuilder.java
@@ -1,13 +1,31 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
 
 import jscl.NumeralBase;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.math.MathType;
 
 /**
diff --git a/core/src/main/java/org/solovyev/android/calculator/Locator.java b/core/src/main/java/org/solovyev/android/calculator/Locator.java
index 9f0fcb38..75fb1d2d 100644
--- a/core/src/main/java/org/solovyev/android/calculator/Locator.java
+++ b/core/src/main/java/org/solovyev/android/calculator/Locator.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import org.solovyev.android.calculator.external.CalculatorExternalListenersContainer;
diff --git a/core/src/main/java/org/solovyev/android/calculator/MathEntityDao.java b/core/src/main/java/org/solovyev/android/calculator/MathEntityDao.java
index 8cd9d414..75e1099e 100644
--- a/core/src/main/java/org/solovyev/android/calculator/MathEntityDao.java
+++ b/core/src/main/java/org/solovyev/android/calculator/MathEntityDao.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/MathEntityPersistenceContainer.java b/core/src/main/java/org/solovyev/android/calculator/MathEntityPersistenceContainer.java
index 3e21b803..8f3db05c 100644
--- a/core/src/main/java/org/solovyev/android/calculator/MathEntityPersistenceContainer.java
+++ b/core/src/main/java/org/solovyev/android/calculator/MathEntityPersistenceContainer.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import java.util.List;
diff --git a/core/src/main/java/org/solovyev/android/calculator/MathPersistenceEntity.java b/core/src/main/java/org/solovyev/android/calculator/MathPersistenceEntity.java
index c252f9aa..ab34ae38 100644
--- a/core/src/main/java/org/solovyev/android/calculator/MathPersistenceEntity.java
+++ b/core/src/main/java/org/solovyev/android/calculator/MathPersistenceEntity.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
diff --git a/core/src/main/java/org/solovyev/android/calculator/MessageDialogData.java b/core/src/main/java/org/solovyev/android/calculator/MessageDialogData.java
index 095b1540..ab241a2c 100644
--- a/core/src/main/java/org/solovyev/android/calculator/MessageDialogData.java
+++ b/core/src/main/java/org/solovyev/android/calculator/MessageDialogData.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.common.msg.Message;
 import org.solovyev.common.msg.MessageLevel;
 
diff --git a/core/src/main/java/org/solovyev/android/calculator/NumberBuilder.java b/core/src/main/java/org/solovyev/android/calculator/NumberBuilder.java
index 7252b809..ec7c8267 100644
--- a/core/src/main/java/org/solovyev/android/calculator/NumberBuilder.java
+++ b/core/src/main/java/org/solovyev/android/calculator/NumberBuilder.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
@@ -11,8 +27,10 @@ import jscl.MathEngine;
 import jscl.NumeralBase;
 import jscl.math.numeric.Real;
 import jscl.text.*;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.math.MathType;
 import org.solovyev.common.MutableObject;
 
diff --git a/core/src/main/java/org/solovyev/android/calculator/OperatorCategory.java b/core/src/main/java/org/solovyev/android/calculator/OperatorCategory.java
index a78cd63e..cc458bac 100644
--- a/core/src/main/java/org/solovyev/android/calculator/OperatorCategory.java
+++ b/core/src/main/java/org/solovyev/android/calculator/OperatorCategory.java
@@ -1,7 +1,31 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import jscl.math.operator.*;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.common.collections.Collections;
 
 import java.util.Comparator;
diff --git a/core/src/main/java/org/solovyev/android/calculator/PreparedExpression.java b/core/src/main/java/org/solovyev/android/calculator/PreparedExpression.java
index 35c8ded9..705bfd80 100644
--- a/core/src/main/java/org/solovyev/android/calculator/PreparedExpression.java
+++ b/core/src/main/java/org/solovyev/android/calculator/PreparedExpression.java
@@ -1,12 +1,29 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
 
 import jscl.math.function.IConstant;
+
 import javax.annotation.Nonnull;
 
 import java.util.List;
diff --git a/core/src/main/java/org/solovyev/android/calculator/StringDialogData.java b/core/src/main/java/org/solovyev/android/calculator/StringDialogData.java
index 1d953c23..91e14a6f 100644
--- a/core/src/main/java/org/solovyev/android/calculator/StringDialogData.java
+++ b/core/src/main/java/org/solovyev/android/calculator/StringDialogData.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.common.msg.MessageType;
 
 /**
diff --git a/core/src/main/java/org/solovyev/android/calculator/SystemOutCalculatorLogger.java b/core/src/main/java/org/solovyev/android/calculator/SystemOutCalculatorLogger.java
index d33b164d..71420cab 100644
--- a/core/src/main/java/org/solovyev/android/calculator/SystemOutCalculatorLogger.java
+++ b/core/src/main/java/org/solovyev/android/calculator/SystemOutCalculatorLogger.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/ToJsclTextProcessor.java b/core/src/main/java/org/solovyev/android/calculator/ToJsclTextProcessor.java
index d8ad9527..947827df 100644
--- a/core/src/main/java/org/solovyev/android/calculator/ToJsclTextProcessor.java
+++ b/core/src/main/java/org/solovyev/android/calculator/ToJsclTextProcessor.java
@@ -1,14 +1,32 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator;
 
 import jscl.math.function.Function;
 import jscl.math.function.IConstant;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.math.MathType;
 import org.solovyev.android.calculator.text.TextProcessor;
 import org.solovyev.common.collections.Collections;
diff --git a/core/src/main/java/org/solovyev/android/calculator/VarCategory.java b/core/src/main/java/org/solovyev/android/calculator/VarCategory.java
index 6b397975..3d59b633 100644
--- a/core/src/main/java/org/solovyev/android/calculator/VarCategory.java
+++ b/core/src/main/java/org/solovyev/android/calculator/VarCategory.java
@@ -1,7 +1,31 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import jscl.math.function.IConstant;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.common.collections.Collections;
 
 import java.util.Comparator;
diff --git a/core/src/main/java/org/solovyev/android/calculator/external/CalculatorExternalListenersContainer.java b/core/src/main/java/org/solovyev/android/calculator/external/CalculatorExternalListenersContainer.java
index 14d79383..feaba428 100644
--- a/core/src/main/java/org/solovyev/android/calculator/external/CalculatorExternalListenersContainer.java
+++ b/core/src/main/java/org/solovyev/android/calculator/external/CalculatorExternalListenersContainer.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.external;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/function/FunctionBuilderAdapter.java b/core/src/main/java/org/solovyev/android/calculator/function/FunctionBuilderAdapter.java
index e7ba2e88..5de3240b 100644
--- a/core/src/main/java/org/solovyev/android/calculator/function/FunctionBuilderAdapter.java
+++ b/core/src/main/java/org/solovyev/android/calculator/function/FunctionBuilderAdapter.java
@@ -1,10 +1,34 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.function;
 
 import jscl.CustomFunctionCalculationException;
 import jscl.math.function.CustomFunction;
 import jscl.math.function.Function;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.model.AFunction;
 import org.solovyev.android.calculator.model.MathEntityBuilder;
 
diff --git a/core/src/main/java/org/solovyev/android/calculator/history/AbstractHistoryState.java b/core/src/main/java/org/solovyev/android/calculator/history/AbstractHistoryState.java
index 4d75d2df..e4254fd6 100644
--- a/core/src/main/java/org/solovyev/android/calculator/history/AbstractHistoryState.java
+++ b/core/src/main/java/org/solovyev/android/calculator/history/AbstractHistoryState.java
@@ -1,12 +1,29 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.history;
 
 import javax.annotation.Nullable;
+
 import org.simpleframework.xml.Element;
 import org.simpleframework.xml.Transient;
 
diff --git a/core/src/main/java/org/solovyev/android/calculator/history/CalculatorDisplayHistoryState.java b/core/src/main/java/org/solovyev/android/calculator/history/CalculatorDisplayHistoryState.java
index c9574de8..d014ebb0 100644
--- a/core/src/main/java/org/solovyev/android/calculator/history/CalculatorDisplayHistoryState.java
+++ b/core/src/main/java/org/solovyev/android/calculator/history/CalculatorDisplayHistoryState.java
@@ -1,13 +1,32 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.history;
 
 import jscl.math.Generic;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.simpleframework.xml.Element;
 import org.simpleframework.xml.Root;
 import org.simpleframework.xml.Transient;
diff --git a/core/src/main/java/org/solovyev/android/calculator/history/CalculatorHistory.java b/core/src/main/java/org/solovyev/android/calculator/history/CalculatorHistory.java
index b4f9aa6e..1591b009 100644
--- a/core/src/main/java/org/solovyev/android/calculator/history/CalculatorHistory.java
+++ b/core/src/main/java/org/solovyev/android/calculator/history/CalculatorHistory.java
@@ -1,6 +1,29 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.history;
 
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.CalculatorEventListener;
 import org.solovyev.common.history.HistoryHelper;
 
diff --git a/core/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryImpl.java b/core/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryImpl.java
index 68355d9f..1e9896bd 100644
--- a/core/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryImpl.java
+++ b/core/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryImpl.java
@@ -1,7 +1,30 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.history;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.*;
 import org.solovyev.common.history.HistoryAction;
 import org.solovyev.common.history.HistoryHelper;
diff --git a/core/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryState.java b/core/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryState.java
index 4f6170bf..7c7335dc 100644
--- a/core/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryState.java
+++ b/core/src/main/java/org/solovyev/android/calculator/history/CalculatorHistoryState.java
@@ -1,11 +1,29 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.history;
 
 import javax.annotation.Nonnull;
+
 import org.simpleframework.xml.Element;
 import org.simpleframework.xml.Root;
 import org.solovyev.android.calculator.CalculatorDisplay;
diff --git a/core/src/main/java/org/solovyev/android/calculator/history/EditorHistoryState.java b/core/src/main/java/org/solovyev/android/calculator/history/EditorHistoryState.java
index bb1cdeeb..3be35caa 100644
--- a/core/src/main/java/org/solovyev/android/calculator/history/EditorHistoryState.java
+++ b/core/src/main/java/org/solovyev/android/calculator/history/EditorHistoryState.java
@@ -1,12 +1,30 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.history;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.simpleframework.xml.Element;
 import org.simpleframework.xml.Root;
 import org.solovyev.android.calculator.CalculatorDisplayViewState;
diff --git a/core/src/main/java/org/solovyev/android/calculator/history/History.java b/core/src/main/java/org/solovyev/android/calculator/history/History.java
index 675b5960..132a30f5 100644
--- a/core/src/main/java/org/solovyev/android/calculator/history/History.java
+++ b/core/src/main/java/org/solovyev/android/calculator/history/History.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.history;
diff --git a/core/src/main/java/org/solovyev/android/calculator/history/HistoryUtils.java b/core/src/main/java/org/solovyev/android/calculator/history/HistoryUtils.java
index 4a5e01f8..1f470fc1 100644
--- a/core/src/main/java/org/solovyev/android/calculator/history/HistoryUtils.java
+++ b/core/src/main/java/org/solovyev/android/calculator/history/HistoryUtils.java
@@ -1,13 +1,30 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.history;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.simpleframework.xml.Serializer;
 import org.simpleframework.xml.core.Persister;
 
diff --git a/core/src/main/java/org/solovyev/android/calculator/jscl/FromJsclNumericTextProcessor.java b/core/src/main/java/org/solovyev/android/calculator/jscl/FromJsclNumericTextProcessor.java
index f45b4c92..7547fea5 100644
--- a/core/src/main/java/org/solovyev/android/calculator/jscl/FromJsclNumericTextProcessor.java
+++ b/core/src/main/java/org/solovyev/android/calculator/jscl/FromJsclNumericTextProcessor.java
@@ -1,13 +1,31 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.jscl;
 
 import jscl.math.Generic;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.CalculatorParseException;
 import org.solovyev.android.calculator.text.TextProcessor;
 
diff --git a/core/src/main/java/org/solovyev/android/calculator/jscl/JsclOperation.java b/core/src/main/java/org/solovyev/android/calculator/jscl/JsclOperation.java
index d01866ac..0c3fd149 100644
--- a/core/src/main/java/org/solovyev/android/calculator/jscl/JsclOperation.java
+++ b/core/src/main/java/org/solovyev/android/calculator/jscl/JsclOperation.java
@@ -1,6 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.jscl;
@@ -8,7 +25,9 @@ package org.solovyev.android.calculator.jscl;
 
 import jscl.math.Generic;
 import jscl.text.ParseException;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.CalculatorMathEngine;
 import org.solovyev.android.calculator.text.DummyTextProcessor;
 import org.solovyev.android.calculator.text.FromJsclSimplifyTextProcessor;
diff --git a/core/src/main/java/org/solovyev/android/calculator/math/MathType.java b/core/src/main/java/org/solovyev/android/calculator/math/MathType.java
index 9945eb4c..c7459c5f 100644
--- a/core/src/main/java/org/solovyev/android/calculator/math/MathType.java
+++ b/core/src/main/java/org/solovyev/android/calculator/math/MathType.java
@@ -1,6 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.math;
@@ -8,8 +25,10 @@ package org.solovyev.android.calculator.math;
 import jscl.JsclMathEngine;
 import jscl.NumeralBase;
 import jscl.math.function.Constants;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.CalculatorParseException;
 import org.solovyev.android.calculator.Locator;
 import org.solovyev.common.JPredicate;
diff --git a/core/src/main/java/org/solovyev/android/calculator/model/AFunction.java b/core/src/main/java/org/solovyev/android/calculator/model/AFunction.java
index 688238a0..c7f87b23 100644
--- a/core/src/main/java/org/solovyev/android/calculator/model/AFunction.java
+++ b/core/src/main/java/org/solovyev/android/calculator/model/AFunction.java
@@ -1,14 +1,32 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.model;
 
 import jscl.math.function.IFunction;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.simpleframework.xml.Element;
 import org.simpleframework.xml.ElementList;
 import org.simpleframework.xml.Root;
diff --git a/core/src/main/java/org/solovyev/android/calculator/model/Functions.java b/core/src/main/java/org/solovyev/android/calculator/model/Functions.java
index 59d6a951..e8c5a67b 100644
--- a/core/src/main/java/org/solovyev/android/calculator/model/Functions.java
+++ b/core/src/main/java/org/solovyev/android/calculator/model/Functions.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.model;
 
 import org.simpleframework.xml.ElementList;
diff --git a/core/src/main/java/org/solovyev/android/calculator/model/MathEntityBuilder.java b/core/src/main/java/org/solovyev/android/calculator/model/MathEntityBuilder.java
index 91d37df7..4966a9e8 100644
--- a/core/src/main/java/org/solovyev/android/calculator/model/MathEntityBuilder.java
+++ b/core/src/main/java/org/solovyev/android/calculator/model/MathEntityBuilder.java
@@ -1,13 +1,30 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.model;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.common.JBuilder;
 import org.solovyev.common.math.MathEntity;
 
diff --git a/core/src/main/java/org/solovyev/android/calculator/model/Var.java b/core/src/main/java/org/solovyev/android/calculator/model/Var.java
index 3003b852..2533db05 100644
--- a/core/src/main/java/org/solovyev/android/calculator/model/Var.java
+++ b/core/src/main/java/org/solovyev/android/calculator/model/Var.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.model;
@@ -9,8 +25,10 @@ package org.solovyev.android.calculator.model;
 import jscl.math.function.Constant;
 import jscl.math.function.ExtendedConstant;
 import jscl.math.function.IConstant;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.simpleframework.xml.Element;
 import org.simpleframework.xml.Root;
 import org.simpleframework.xml.Transient;
diff --git a/core/src/main/java/org/solovyev/android/calculator/model/Vars.java b/core/src/main/java/org/solovyev/android/calculator/model/Vars.java
index f6ef4f43..7f3a9acf 100644
--- a/core/src/main/java/org/solovyev/android/calculator/model/Vars.java
+++ b/core/src/main/java/org/solovyev/android/calculator/model/Vars.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.model;
 
 import org.simpleframework.xml.ElementList;
diff --git a/core/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotter.java b/core/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotter.java
index 3fce1b15..1f7ac6a0 100644
--- a/core/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotter.java
+++ b/core/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotter.java
@@ -1,6 +1,29 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import jscl.math.Generic;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
diff --git a/core/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotterImpl.java b/core/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotterImpl.java
index 95e5f18c..a66d8a3b 100644
--- a/core/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotterImpl.java
+++ b/core/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotterImpl.java
@@ -1,16 +1,41 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import com.google.common.base.Predicate;
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Lists;
+
 import jscl.math.Generic;
 import jscl.math.function.Constant;
+
 import org.solovyev.android.calculator.Calculator;
 import org.solovyev.android.calculator.CalculatorEventType;
 import org.solovyev.android.calculator.CalculatorUtils;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
diff --git a/core/src/main/java/org/solovyev/android/calculator/plot/FunctionEvaluator.java b/core/src/main/java/org/solovyev/android/calculator/plot/FunctionEvaluator.java
index 35846136..9925a181 100644
--- a/core/src/main/java/org/solovyev/android/calculator/plot/FunctionEvaluator.java
+++ b/core/src/main/java/org/solovyev/android/calculator/plot/FunctionEvaluator.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 /**
diff --git a/core/src/main/java/org/solovyev/android/calculator/plot/MapPlotResourceManager.java b/core/src/main/java/org/solovyev/android/calculator/plot/MapPlotResourceManager.java
index 42a92fe9..d3523fb5 100644
--- a/core/src/main/java/org/solovyev/android/calculator/plot/MapPlotResourceManager.java
+++ b/core/src/main/java/org/solovyev/android/calculator/plot/MapPlotResourceManager.java
@@ -1,10 +1,34 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import com.google.common.base.Predicate;
 import com.google.common.collect.Iterables;
+
 import javax.annotation.Nonnull;
 
 import javax.annotation.Nullable;
+
 import java.util.*;
 
 /**
diff --git a/core/src/main/java/org/solovyev/android/calculator/plot/PlotBoundaries.java b/core/src/main/java/org/solovyev/android/calculator/plot/PlotBoundaries.java
index c0315167..99640de1 100644
--- a/core/src/main/java/org/solovyev/android/calculator/plot/PlotBoundaries.java
+++ b/core/src/main/java/org/solovyev/android/calculator/plot/PlotBoundaries.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/plot/PlotData.java b/core/src/main/java/org/solovyev/android/calculator/plot/PlotData.java
index e860d19f..fdf08e24 100644
--- a/core/src/main/java/org/solovyev/android/calculator/plot/PlotData.java
+++ b/core/src/main/java/org/solovyev/android/calculator/plot/PlotData.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/plot/PlotFunction.java b/core/src/main/java/org/solovyev/android/calculator/plot/PlotFunction.java
index 50f1b78d..2db4b5c5 100644
--- a/core/src/main/java/org/solovyev/android/calculator/plot/PlotFunction.java
+++ b/core/src/main/java/org/solovyev/android/calculator/plot/PlotFunction.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/plot/PlotLineColor.java b/core/src/main/java/org/solovyev/android/calculator/plot/PlotLineColor.java
index 77a92783..43db39a2 100644
--- a/core/src/main/java/org/solovyev/android/calculator/plot/PlotLineColor.java
+++ b/core/src/main/java/org/solovyev/android/calculator/plot/PlotLineColor.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/plot/PlotLineColorType.java b/core/src/main/java/org/solovyev/android/calculator/plot/PlotLineColorType.java
index d6b2a005..31ffdf71 100644
--- a/core/src/main/java/org/solovyev/android/calculator/plot/PlotLineColorType.java
+++ b/core/src/main/java/org/solovyev/android/calculator/plot/PlotLineColorType.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 /**
diff --git a/core/src/main/java/org/solovyev/android/calculator/plot/PlotLineDef.java b/core/src/main/java/org/solovyev/android/calculator/plot/PlotLineDef.java
index 4104965d..bff02cad 100644
--- a/core/src/main/java/org/solovyev/android/calculator/plot/PlotLineDef.java
+++ b/core/src/main/java/org/solovyev/android/calculator/plot/PlotLineDef.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/plot/PlotLineStyle.java b/core/src/main/java/org/solovyev/android/calculator/plot/PlotLineStyle.java
index 3b0a80c1..7687e0a7 100644
--- a/core/src/main/java/org/solovyev/android/calculator/plot/PlotLineStyle.java
+++ b/core/src/main/java/org/solovyev/android/calculator/plot/PlotLineStyle.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 
diff --git a/core/src/main/java/org/solovyev/android/calculator/plot/PlotResourceManager.java b/core/src/main/java/org/solovyev/android/calculator/plot/PlotResourceManager.java
index a738e889..cc20b11e 100644
--- a/core/src/main/java/org/solovyev/android/calculator/plot/PlotResourceManager.java
+++ b/core/src/main/java/org/solovyev/android/calculator/plot/PlotResourceManager.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import javax.annotation.Nonnull;
diff --git a/core/src/main/java/org/solovyev/android/calculator/plot/PlotUtils.java b/core/src/main/java/org/solovyev/android/calculator/plot/PlotUtils.java
index c085fd95..a8a391c1 100644
--- a/core/src/main/java/org/solovyev/android/calculator/plot/PlotUtils.java
+++ b/core/src/main/java/org/solovyev/android/calculator/plot/PlotUtils.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.plot;
@@ -14,6 +30,7 @@ import jscl.math.function.Constant;
 import jscl.math.numeric.Complex;
 import jscl.math.numeric.Numeric;
 import jscl.math.numeric.Real;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
diff --git a/core/src/main/java/org/solovyev/android/calculator/plot/XyFunction.java b/core/src/main/java/org/solovyev/android/calculator/plot/XyFunction.java
index 33cc80f6..6da786f4 100644
--- a/core/src/main/java/org/solovyev/android/calculator/plot/XyFunction.java
+++ b/core/src/main/java/org/solovyev/android/calculator/plot/XyFunction.java
@@ -1,9 +1,33 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.plot;
 
 import jscl.math.Generic;
 import jscl.math.function.Constant;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.common.text.Strings;
 
 public class XyFunction implements FunctionEvaluator {
diff --git a/core/src/main/java/org/solovyev/android/calculator/text/DummyTextProcessor.java b/core/src/main/java/org/solovyev/android/calculator/text/DummyTextProcessor.java
index b10fd53d..e549fc2b 100644
--- a/core/src/main/java/org/solovyev/android/calculator/text/DummyTextProcessor.java
+++ b/core/src/main/java/org/solovyev/android/calculator/text/DummyTextProcessor.java
@@ -1,13 +1,31 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.text;
 
 import jscl.math.Generic;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.CalculatorParseException;
 
 /**
diff --git a/core/src/main/java/org/solovyev/android/calculator/text/FromJsclSimplifyTextProcessor.java b/core/src/main/java/org/solovyev/android/calculator/text/FromJsclSimplifyTextProcessor.java
index 577a510a..f9535815 100644
--- a/core/src/main/java/org/solovyev/android/calculator/text/FromJsclSimplifyTextProcessor.java
+++ b/core/src/main/java/org/solovyev/android/calculator/text/FromJsclSimplifyTextProcessor.java
@@ -1,8 +1,32 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.text;
 
 import jscl.math.Generic;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.solovyev.android.calculator.CalculatorParseException;
 import org.solovyev.android.calculator.Locator;
 import org.solovyev.android.calculator.math.MathType;
diff --git a/core/src/main/java/org/solovyev/android/calculator/text/TextProcessor.java b/core/src/main/java/org/solovyev/android/calculator/text/TextProcessor.java
index 84f508e7..3c807a33 100644
--- a/core/src/main/java/org/solovyev/android/calculator/text/TextProcessor.java
+++ b/core/src/main/java/org/solovyev/android/calculator/text/TextProcessor.java
@@ -1,6 +1,29 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.text;
 
 import javax.annotation.Nonnull;
+
 import org.solovyev.android.calculator.CalculatorParseException;
 
 /**
diff --git a/core/src/main/java/org/solovyev/android/calculator/units/CalculatorNumeralBase.java b/core/src/main/java/org/solovyev/android/calculator/units/CalculatorNumeralBase.java
index 7953cd28..aa1e619e 100644
--- a/core/src/main/java/org/solovyev/android/calculator/units/CalculatorNumeralBase.java
+++ b/core/src/main/java/org/solovyev/android/calculator/units/CalculatorNumeralBase.java
@@ -1,7 +1,31 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.units;
 
 import jscl.NumeralBase;
+
 import javax.annotation.Nonnull;
+
 import org.solovyev.common.units.Unit;
 import org.solovyev.common.units.UnitConverter;
 import org.solovyev.common.units.UnitImpl;
diff --git a/core/src/test/java/org/solovyev/android/calculator/AbstractCalculatorTest.java b/core/src/test/java/org/solovyev/android/calculator/AbstractCalculatorTest.java
index 44fcf6e9..6dc1777b 100644
--- a/core/src/test/java/org/solovyev/android/calculator/AbstractCalculatorTest.java
+++ b/core/src/test/java/org/solovyev/android/calculator/AbstractCalculatorTest.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import org.mockito.Mockito;
diff --git a/core/src/test/java/org/solovyev/android/calculator/CalculatorDisplayViewStateImplTest.java b/core/src/test/java/org/solovyev/android/calculator/CalculatorDisplayViewStateImplTest.java
index ff87d04f..09dd6940 100644
--- a/core/src/test/java/org/solovyev/android/calculator/CalculatorDisplayViewStateImplTest.java
+++ b/core/src/test/java/org/solovyev/android/calculator/CalculatorDisplayViewStateImplTest.java
@@ -1,6 +1,29 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import jscl.math.Expression;
+
 import org.junit.Test;
 import org.solovyev.android.calculator.jscl.JsclOperation;
 
diff --git a/core/src/test/java/org/solovyev/android/calculator/CalculatorEditorImplTest.java b/core/src/test/java/org/solovyev/android/calculator/CalculatorEditorImplTest.java
index 8e5532aa..114f8d9f 100644
--- a/core/src/test/java/org/solovyev/android/calculator/CalculatorEditorImplTest.java
+++ b/core/src/test/java/org/solovyev/android/calculator/CalculatorEditorImplTest.java
@@ -1,7 +1,31 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import junit.framework.Assert;
+
 import javax.annotation.Nonnull;
+
 import org.junit.Before;
 import org.junit.Test;
 
diff --git a/core/src/test/java/org/solovyev/android/calculator/CalculatorEditorViewStateImplTest.java b/core/src/test/java/org/solovyev/android/calculator/CalculatorEditorViewStateImplTest.java
index a6f16848..777d97c2 100644
--- a/core/src/test/java/org/solovyev/android/calculator/CalculatorEditorViewStateImplTest.java
+++ b/core/src/test/java/org/solovyev/android/calculator/CalculatorEditorViewStateImplTest.java
@@ -1,6 +1,29 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import junit.framework.Assert;
+
 import org.junit.Test;
 
 /**
diff --git a/core/src/test/java/org/solovyev/android/calculator/CalculatorImplTest.java b/core/src/test/java/org/solovyev/android/calculator/CalculatorImplTest.java
index b1c03a13..e9850cdb 100644
--- a/core/src/test/java/org/solovyev/android/calculator/CalculatorImplTest.java
+++ b/core/src/test/java/org/solovyev/android/calculator/CalculatorImplTest.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import org.junit.Before;
diff --git a/core/src/test/java/org/solovyev/android/calculator/CalculatorTestUtils.java b/core/src/test/java/org/solovyev/android/calculator/CalculatorTestUtils.java
index 1e9b43ec..f33d27a5 100644
--- a/core/src/test/java/org/solovyev/android/calculator/CalculatorTestUtils.java
+++ b/core/src/test/java/org/solovyev/android/calculator/CalculatorTestUtils.java
@@ -1,6 +1,29 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import jscl.JsclMathEngine;
+
 import org.junit.Assert;
 import org.mockito.Mockito;
 import org.solovyev.android.calculator.external.CalculatorExternalListenersContainer;
@@ -10,6 +33,7 @@ import org.solovyev.android.calculator.plot.CalculatorPlotter;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import java.io.*;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
diff --git a/core/src/test/java/org/solovyev/android/calculator/FromJsclSimplifyTextProcessorTest.java b/core/src/test/java/org/solovyev/android/calculator/FromJsclSimplifyTextProcessorTest.java
index 1002d855..1ff797af 100644
--- a/core/src/test/java/org/solovyev/android/calculator/FromJsclSimplifyTextProcessorTest.java
+++ b/core/src/test/java/org/solovyev/android/calculator/FromJsclSimplifyTextProcessorTest.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator;
 
 import org.junit.Assert;
diff --git a/core/src/test/java/org/solovyev/android/calculator/history/CalculatorHistoryImplTest.java b/core/src/test/java/org/solovyev/android/calculator/history/CalculatorHistoryImplTest.java
index da90a39d..e5f91c9e 100644
--- a/core/src/test/java/org/solovyev/android/calculator/history/CalculatorHistoryImplTest.java
+++ b/core/src/test/java/org/solovyev/android/calculator/history/CalculatorHistoryImplTest.java
@@ -1,7 +1,31 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.history;
 
 import junit.framework.Assert;
+
 import javax.annotation.Nonnull;
+
 import org.junit.BeforeClass;
 import org.junit.Test;
 import org.solovyev.android.calculator.CalculatorDisplayViewStateImpl;
diff --git a/core/src/test/java/org/solovyev/android/calculator/jscl/FromJsclNumericTextProcessorTest.java b/core/src/test/java/org/solovyev/android/calculator/jscl/FromJsclNumericTextProcessorTest.java
index 871ade34..802bd259 100644
--- a/core/src/test/java/org/solovyev/android/calculator/jscl/FromJsclNumericTextProcessorTest.java
+++ b/core/src/test/java/org/solovyev/android/calculator/jscl/FromJsclNumericTextProcessorTest.java
@@ -1,7 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.jscl;
@@ -10,6 +26,7 @@ import jscl.AngleUnit;
 import jscl.JsclMathEngine;
 import jscl.math.Expression;
 import jscl.math.Generic;
+
 import org.junit.Assert;
 import org.junit.BeforeClass;
 import org.junit.Test;
diff --git a/core/src/test/java/org/solovyev/android/calculator/math/MathTypeTest.java b/core/src/test/java/org/solovyev/android/calculator/math/MathTypeTest.java
index c3ed6abf..febed3d9 100644
--- a/core/src/test/java/org/solovyev/android/calculator/math/MathTypeTest.java
+++ b/core/src/test/java/org/solovyev/android/calculator/math/MathTypeTest.java
@@ -1,12 +1,29 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.math;
 
 import junit.framework.Assert;
+
 import org.junit.BeforeClass;
 import org.junit.Test;
 import org.solovyev.android.calculator.AbstractCalculatorTest;
diff --git a/core/src/test/java/org/solovyev/android/calculator/model/AndroidCalculatorEngineTest.java b/core/src/test/java/org/solovyev/android/calculator/model/AndroidCalculatorEngineTest.java
index 96b7e413..134aea40 100644
--- a/core/src/test/java/org/solovyev/android/calculator/model/AndroidCalculatorEngineTest.java
+++ b/core/src/test/java/org/solovyev/android/calculator/model/AndroidCalculatorEngineTest.java
@@ -1,6 +1,23 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.model;
@@ -15,6 +32,7 @@ import jscl.math.function.Constant;
 import jscl.math.function.CustomFunction;
 import jscl.text.ParseException;
 import junit.framework.Assert;
+
 import org.junit.BeforeClass;
 import org.junit.Test;
 import org.solovyev.android.calculator.AbstractCalculatorTest;
diff --git a/core/src/test/java/org/solovyev/android/calculator/model/FunctionsTest.java b/core/src/test/java/org/solovyev/android/calculator/model/FunctionsTest.java
index 6b4a9452..0ad3c5b2 100644
--- a/core/src/test/java/org/solovyev/android/calculator/model/FunctionsTest.java
+++ b/core/src/test/java/org/solovyev/android/calculator/model/FunctionsTest.java
@@ -1,10 +1,35 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.model;
 
 import jscl.util.ExpressionGenerator;
+
 import org.hamcrest.BaseMatcher;
 import org.hamcrest.Description;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
diff --git a/core/src/test/java/org/solovyev/android/calculator/model/NumeralBaseTest.java b/core/src/test/java/org/solovyev/android/calculator/model/NumeralBaseTest.java
index 2ac9dee2..dff4074c 100644
--- a/core/src/test/java/org/solovyev/android/calculator/model/NumeralBaseTest.java
+++ b/core/src/test/java/org/solovyev/android/calculator/model/NumeralBaseTest.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
+ */
+
 package org.solovyev.android.calculator.model;
 
 import au.com.bytecode.opencsv.CSVReader;
@@ -6,7 +28,9 @@ import jscl.MathEngine;
 import jscl.math.Expression;
 import jscl.text.ParseException;
 import jscl.util.ExpressionGeneratorWithInput;
+
 import javax.annotation.Nonnull;
+
 import org.junit.Assert;
 import org.junit.BeforeClass;
 import org.junit.Test;
diff --git a/core/src/test/java/org/solovyev/android/calculator/model/ToJsclTextProcessorTest.java b/core/src/test/java/org/solovyev/android/calculator/model/ToJsclTextProcessorTest.java
index 26bcf555..faa5976b 100644
--- a/core/src/test/java/org/solovyev/android/calculator/model/ToJsclTextProcessorTest.java
+++ b/core/src/test/java/org/solovyev/android/calculator/model/ToJsclTextProcessorTest.java
@@ -1,13 +1,30 @@
 /*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- * or visit http://se.solovyev.org
+ * Copyright 2013 serso aka se.solovyev
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Contact details
+ *
+ * Email: se.solovyev@gmail.com
+ * Site:  http://se.solovyev.org
  */
 
 package org.solovyev.android.calculator.model;
 
 import jscl.JsclMathEngine;
 import jscl.NumeralBase;
+
 import org.junit.Assert;
 import org.junit.BeforeClass;
 import org.junit.Test;
diff --git a/pom.xml b/pom.xml
index 4a75ff06..f9303aa9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,5 +1,28 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<!--
+  ~ Copyright 2013 serso aka se.solovyev
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~    http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  ~ Contact details
+  ~
+  ~ Email: se.solovyev@gmail.com
+  ~ Site:  http://se.solovyev.org
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 
 	<parent>
 		<groupId>org.sonatype.oss</groupId>