Code reformatted

android-app/src/main/res/layout/about_fragment.xml

@@ -23,54 +23,54 @@
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="fill_parent"
-	a:layout_height="fill_parent"
-	a:orientation="vertical">
+    a:layout_width="fill_parent"
+    a:layout_height="fill_parent"
+    a:orientation="vertical">
 
-	<ImageView
-		a:id="@+id/about_image"
-		a:layout_width="200dp"
-		a:layout_height="200dp"
-		a:layout_gravity="center"
-		a:scaleType="center"
-		a:layout_weight="1"
-		a:padding="6dp"
-		a:src="@drawable/logo_wizard" />
+    <ImageView
+        a:id="@+id/about_image"
+        a:layout_width="200dp"
+        a:layout_height="200dp"
+        a:layout_gravity="center"
+        a:layout_weight="1"
+        a:padding="6dp"
+        a:scaleType="center"
+        a:src="@drawable/logo_wizard" />
 
-	<ScrollView
-		a:layout_width="fill_parent"
-		a:layout_height="fill_parent"
-		a:layout_weight="1">
+    <ScrollView
+        a:layout_width="fill_parent"
+        a:layout_height="fill_parent"
+        a:layout_weight="1">
 
-		<LinearLayout
-			a:layout_width="fill_parent"
-			a:layout_height="wrap_content"
-			a:orientation="vertical">
+        <LinearLayout
+            a:layout_width="fill_parent"
+            a:layout_height="wrap_content"
+            a:orientation="vertical">
 
-			<TextView
-				a:id="@+id/cpp_about_textview"
-				style="@style/CppText.About"
-				a:layout_width="match_parent"
-				a:layout_height="match_parent"
-				a:text="@string/c_about_content" />
+            <TextView
+                a:id="@+id/cpp_about_textview"
+                style="@style/CppText.About"
+                a:layout_width="match_parent"
+                a:layout_height="match_parent"
+                a:text="@string/c_about_content" />
 
 
-			<TextView
-				a:id="@+id/cpp_about_translators_text"
-				style="@style/CppText.About"
-				a:layout_width="match_parent"
-				a:layout_height="wrap_content"
-				a:paddingBottom="0dp"
-				a:text="@string/cpp_translators_text" />
+            <TextView
+                a:id="@+id/cpp_about_translators_text"
+                style="@style/CppText.About"
+                a:layout_width="match_parent"
+                a:layout_height="wrap_content"
+                a:paddingBottom="0dp"
+                a:text="@string/cpp_translators_text" />
 
-			<TextView
-				a:id="@+id/cpp_about_translators"
-				style="@style/CppText.About"
-				a:layout_width="match_parent"
-				a:layout_height="wrap_content"
-				a:paddingTop="0dp"
-				a:text="@string/cpp_translators_list" />
+            <TextView
+                a:id="@+id/cpp_about_translators"
+                style="@style/CppText.About"
+                a:layout_width="match_parent"
+                a:layout_height="wrap_content"
+                a:paddingTop="0dp"
+                a:text="@string/cpp_translators_list" />
 
-		</LinearLayout>
-	</ScrollView>
+        </LinearLayout>
+    </ScrollView>
 </LinearLayout>

android-app/src/main/res/layout/ad.xml

@@ -22,9 +22,10 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<org.solovyev.android.calculator.AdView a:id="@+id/ad"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="wrap_content"
-	a:layout_gravity="center"
-	a:visibility="gone" />
+<org.solovyev.android.calculator.AdView
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@+id/ad"
+    a:layout_width="match_parent"
+    a:layout_height="wrap_content"
+    a:layout_gravity="center"
+    a:visibility="gone" />

android-app/src/main/res/layout/admob.xml

@@ -22,12 +22,13 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<com.google.android.gms.ads.AdView a:id="@+id/admob"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:ads="http://schemas.android.com/apk/res-auto"
-	a:layout_width="match_parent"
-	a:layout_height="wrap_content"
-	a:layout_gravity="center"
-	a:visibility="gone"
-	ads:adSize="BANNER"
-	ads:adUnitId="@string/admob" />
+<com.google.android.gms.ads.AdView
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:ads="http://schemas.android.com/apk/res-auto"
+    a:id="@+id/admob"
+    a:layout_width="match_parent"
+    a:layout_height="wrap_content"
+    a:layout_gravity="center"
+    a:visibility="gone"
+    ads:adSize="BANNER"
+    ads:adUnitId="@string/admob" />

android-app/src/main/res/layout/cpp_activity_wizard.xml

@@ -1,23 +1,24 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout style="@style/MaterialActivity"
-	xmlns:android="http://schemas.android.com/apk/res/android"
-	xmlns:my="http://schemas.android.com/apk/res-auto"
-	android:orientation="vertical"
-	android:padding="0dp">
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:my="http://schemas.android.com/apk/res-auto"
+    style="@style/MaterialActivity"
+    android:orientation="vertical"
+    android:padding="0dp">
 
-	<android.support.v4.view.ViewPager
-		android:id="@+id/pager"
-		android:layout_width="match_parent"
-		android:layout_height="0dp"
-		android:layout_weight="1" />
+    <android.support.v4.view.ViewPager
+        android:id="@+id/pager"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1" />
 
-	<com.viewpagerindicator.CirclePageIndicator
-		android:id="@+id/pager_indicator"
-		android:layout_width="match_parent"
-		android:layout_height="wrap_content"
-		android:paddingBottom="10dp"
-		android:paddingTop="10dp"
-		my:fillColor="?attr/colorAccent"
-		my:radius="5dp" />
+    <com.viewpagerindicator.CirclePageIndicator
+        android:id="@+id/pager_indicator"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:paddingBottom="10dp"
+        android:paddingTop="10dp"
+        my:fillColor="?attr/colorAccent"
+        my:radius="5dp" />
 
 </LinearLayout>

android-app/src/main/res/layout/cpp_app_button_0.xml

@@ -23,13 +23,13 @@
   -->
 
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_0"
-	style="?attr/cpp_button_style_digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:text="0"
-	c:directionTextScale="0.5"
-	c:textDown="000"
-	c:textUp="00"
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_0"
+    style="?attr/cpp_button_style_digit"
+    a:text="0"
+    c:directionTextScale="0.5"
+    c:textDown="000"
+    c:textUp="00"
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_button_1.xml

@@ -23,13 +23,13 @@
   -->
 
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_1"
-	style="?attr/cpp_button_style_digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:text="1"
-	c:textDown="asin"
-	c:textLeft="A"
-	c:textUp="sin"
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_1"
+    style="?attr/cpp_button_style_digit"
+    a:text="1"
+    c:textDown="asin"
+    c:textLeft="A"
+    c:textUp="sin"
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_button_2.xml

@@ -23,13 +23,13 @@
   -->
 
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_2"
-	style="?attr/cpp_button_style_digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:text="2"
-	c:textDown="acos"
-	c:textLeft="B"
-	c:textUp="cos"
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_2"
+    style="?attr/cpp_button_style_digit"
+    a:text="2"
+    c:textDown="acos"
+    c:textLeft="B"
+    c:textUp="cos"
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_button_3.xml

@@ -23,13 +23,13 @@
   -->
 
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_3"
-	style="?attr/cpp_button_style_digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:text="3"
-	c:textDown="atan"
-	c:textLeft="C"
-	c:textUp="tan"
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_3"
+    style="?attr/cpp_button_style_digit"
+    a:text="3"
+    c:textDown="atan"
+    c:textLeft="C"
+    c:textUp="tan"
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_button_4.xml

@@ -22,13 +22,13 @@
   ~ Site:  http://se.solovyev.org
   -->
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_4"
-	style="?attr/cpp_button_style_digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:text="4"
-	c:textDown="y"
-	c:textLeft="D"
-	c:textUp="x"
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_4"
+    style="?attr/cpp_button_style_digit"
+    a:text="4"
+    c:textDown="y"
+    c:textLeft="D"
+    c:textUp="x"
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_button_5.xml

@@ -22,13 +22,13 @@
   ~ Site:  http://se.solovyev.org
   -->
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_5"
-	style="?attr/cpp_button_style_digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:text="5"
-	c:textDown="j"
-	c:textLeft="E"
-	c:textUp="t"
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_5"
+    style="?attr/cpp_button_style_digit"
+    a:text="5"
+    c:textDown="j"
+    c:textLeft="E"
+    c:textUp="t"
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_button_6.xml

@@ -23,14 +23,14 @@
   -->
 
 <org.solovyev.android.calculator.view.AngleUnitsButton
-	a:id="@id/cpp_button_6"
-	style="?attr/cpp_button_style_digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:text="6"
-	c:directionTextScale="0.33;0.30;0.33;0.33"
-	c:textDown="rad"
-	c:textLeft="F"
-	c:textUp="deg"
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_6"
+    style="?attr/cpp_button_style_digit"
+    a:text="6"
+    c:directionTextScale="0.33;0.30;0.33;0.33"
+    c:textDown="rad"
+    c:textLeft="F"
+    c:textUp="deg"
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_button_7.xml

@@ -23,14 +23,14 @@
   -->
 
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_7"
-	style="?attr/cpp_button_style_digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:text="7"
-	c:directionTextScale="0.5;0.5;0.5;0.33"
-	c:textDown="!"
-	c:textLeft="0b:"
-	c:textUp="i"
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_7"
+    style="?attr/cpp_button_style_digit"
+    a:text="7"
+    c:directionTextScale="0.5;0.5;0.5;0.33"
+    c:textDown="!"
+    c:textLeft="0b:"
+    c:textUp="i"
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_button_8.xml

@@ -23,14 +23,14 @@
   -->
 
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_8"
-	style="?attr/cpp_button_style_digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:text="8"
-	c:directionTextScale="0.5;0.5;0.5;0.33"
-	c:textDown="lg"
-	c:textLeft="0d:"
-	c:textUp="ln"
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_8"
+    style="?attr/cpp_button_style_digit"
+    a:text="8"
+    c:directionTextScale="0.5;0.5;0.5;0.33"
+    c:textDown="lg"
+    c:textLeft="0d:"
+    c:textUp="ln"
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_button_9.xml

@@ -23,14 +23,14 @@
   -->
 
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_9"
-	style="?attr/cpp_button_style_digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:text="9"
-	c:directionTextScale="0.5;0.5;0.5;0.33"
-	c:textDown="e"
-	c:textLeft="0x:"
-	c:textUp="π"
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_9"
+    style="?attr/cpp_button_style_digit"
+    a:text="9"
+    c:directionTextScale="0.5;0.5;0.5;0.33"
+    c:textDown="e"
+    c:textLeft="0x:"
+    c:textUp="π"
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_button_clear.xml

@@ -23,12 +23,12 @@
   -->
 
 <org.solovyev.android.calculator.view.NumeralBasesButton
-	a:id="@id/cpp_button_clear"
-	style="?attr/cpp_button_style_control_image"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	a:text="@string/c_clear"
-	a:textStyle="bold"
-	c:textDown="bin"
-	c:textLeft="hex"
-	c:textUp="dec" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    a:id="@id/cpp_button_clear"
+    style="?attr/cpp_button_style_control_image"
+    a:text="@string/c_clear"
+    a:textStyle="bold"
+    c:textDown="bin"
+    c:textLeft="hex"
+    c:textUp="dec" />

android-app/src/main/res/layout/cpp_app_button_copy.xml

@@ -23,7 +23,7 @@
   -->
 
 <ImageButton
-	a:id="@id/cpp_button_copy"
-	style="?attr/cpp_button_style_control_image"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:src="@drawable/kb_copy" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_copy"
+    style="?attr/cpp_button_style_control_image"
+    a:src="@drawable/kb_copy" />

android-app/src/main/res/layout/cpp_app_button_division.xml

@@ -23,13 +23,13 @@
   -->
 
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_division"
-	style="?attr/cpp_button_style_operation"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:text="/"
-	c:directionTextScale="0.5"
-	c:textDown="√"
-	c:textUp="%"
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_division"
+    style="?attr/cpp_button_style_operation"
+    a:text="/"
+    c:directionTextScale="0.5"
+    c:textDown="√"
+    c:textUp="%"
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_button_donate.xml

@@ -23,7 +23,7 @@
   -->
 
 <ImageButton
-	a:id="@id/cpp_button_like"
-	style="?attr/cpp_button_style_control_image"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:src="@drawable/kb_share" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_like"
+    style="?attr/cpp_button_style_control_image"
+    a:src="@drawable/kb_share" />

android-app/src/main/res/layout/cpp_app_button_dot.xml

@@ -23,12 +23,12 @@
   -->
 
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_period"
-	style="?attr/cpp_button_style_digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:text="."
-	c:directionTextScale="0.5"
-	c:textUp=","
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_period"
+    style="?attr/cpp_button_style_digit"
+    a:text="."
+    c:directionTextScale="0.5"
+    c:textUp=","
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_button_equals.xml

@@ -22,13 +22,13 @@
   ~ Site:  http://se.solovyev.org
   -->
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_equals"
-	style="?attr/cpp_button_style_control"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:text="="
-	c:directionTextScale="0.5;0.5;0.33;0.5"
-	c:textDown="@string/cpp_plot_button_text"
-	c:textUp="≡"
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_equals"
+    style="?attr/cpp_button_style_control"
+    a:text="="
+    c:directionTextScale="0.5;0.5;0.33;0.5"
+    c:textDown="@string/cpp_plot_button_text"
+    c:textUp="≡"
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_button_equals_no_bg.xml

@@ -22,16 +22,16 @@
   ~ Site:  http://se.solovyev.org
   -->
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_equals"
-	style="?attr/cpp_button_style_control"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:background="@drawable/button_no_bg"
-	a:text="="
-	a:textColor="?android:attr/textColorPrimary"
-	c:directionTextColor="?android:attr/textColorPrimary"
-	c:directionTextScale="0.5;0.5;0.33;0.5"
-	c:textDown="@string/cpp_plot_button_text"
-	c:textUp="≡"
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_equals"
+    style="?attr/cpp_button_style_control"
+    a:background="@drawable/button_no_bg"
+    a:text="="
+    a:textColor="?android:attr/textColorPrimary"
+    c:directionTextColor="?android:attr/textColorPrimary"
+    c:directionTextScale="0.5;0.5;0.33;0.5"
+    c:textDown="@string/cpp_plot_button_text"
+    c:textUp="≡"
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_button_erase.xml

@@ -23,7 +23,7 @@
   -->
 
 <ImageButton
-	a:id="@id/cpp_button_erase"
-	style="?attr/cpp_button_style_control_image"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:src="@drawable/kb_erase" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_erase"
+    style="?attr/cpp_button_style_control_image"
+    a:src="@drawable/kb_erase" />

android-app/src/main/res/layout/cpp_app_button_functions.xml

@@ -23,13 +23,13 @@
   -->
 
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_functions"
-	style="?attr/cpp_button_style_control"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:text="ƒ(x)"
-	a:textStyle="italic"
-	c:directionTextScale="0.4"
-	c:textUp="+ƒ"
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_functions"
+    style="?attr/cpp_button_style_control"
+    a:text="ƒ(x)"
+    a:textStyle="italic"
+    c:directionTextScale="0.4"
+    c:textUp="+ƒ"
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_button_history.xml

@@ -22,12 +22,12 @@
   ~ Site:  http://se.solovyev.org
   -->
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_history"
-	style="?attr/cpp_button_style_control"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	a:text="@string/c_history_button"
-	a:textStyle="bold"
-	c:directionTextScale="0.27"
-	c:textDown="@string/c_redo"
-	c:textUp="@string/c_undo" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    a:id="@id/cpp_button_history"
+    style="?attr/cpp_button_style_control"
+    a:text="@string/c_history_button"
+    a:textStyle="bold"
+    c:directionTextScale="0.27"
+    c:textDown="@string/c_redo"
+    c:textUp="@string/c_undo" />

android-app/src/main/res/layout/cpp_app_button_left.xml

@@ -23,12 +23,12 @@
   -->
 
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_left"
-	style="?attr/cpp_button_style_control"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:text="◁"
-	c:directionTextScale="0.5"
-	c:textUp="◁◁"
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_left"
+    style="?attr/cpp_button_style_control"
+    a:text="◁"
+    c:directionTextScale="0.5"
+    c:textUp="◁◁"
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_button_minus.xml

@@ -22,12 +22,12 @@
   ~ Site:  http://se.solovyev.org
   -->
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_subtraction"
-	style="?attr/cpp_button_style_operation"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:text="−"
-	c:directionTextScale="0.4"
-	c:textDown="∂,…"
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_subtraction"
+    style="?attr/cpp_button_style_operation"
+    a:text="−"
+    c:directionTextScale="0.4"
+    c:textDown="∂,…"
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_button_multiplication.xml

@@ -23,14 +23,14 @@
   -->
 
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_multiplication"
-	style="?attr/cpp_button_style_operation"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:text="×"
-	c:directionTextScale="0.5"
-	c:textDown="^2"
-	c:textLeft="Π"
-	c:textUp="^"
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_multiplication"
+    style="?attr/cpp_button_style_operation"
+    a:text="×"
+    c:directionTextScale="0.5"
+    c:textDown="^2"
+    c:textLeft="Π"
+    c:textUp="^"
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_button_operators.xml

@@ -23,9 +23,9 @@
   -->
 
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_operators"
-	style="?attr/cpp_button_style_control"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:text="∂,…"
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_operators"
+    style="?attr/cpp_button_style_control"
+    a:text="∂,…"
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_button_paste.xml

@@ -23,7 +23,7 @@
   -->
 
 <ImageButton
-	a:id="@id/cpp_button_paste"
-	style="?attr/cpp_button_style_control_image"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:src="@drawable/kb_paste" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_paste"
+    style="?attr/cpp_button_style_control_image"
+    a:src="@drawable/kb_paste" />

android-app/src/main/res/layout/cpp_app_button_plus.xml

@@ -22,13 +22,13 @@
   ~ Site:  http://se.solovyev.org
   -->
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_plus"
-	style="?attr/cpp_button_style_operation"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:text="+"
-	c:directionTextScale="0.5"
-	c:textDown="E"
-	c:textUp="°"
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_plus"
+    style="?attr/cpp_button_style_operation"
+    a:text="+"
+    c:directionTextScale="0.5"
+    c:textDown="E"
+    c:textUp="°"
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_button_right.xml

@@ -23,12 +23,12 @@
   -->
 
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_right"
-	style="?attr/cpp_button_style_control"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:text="▷"
-	c:directionTextScale="0.5"
-	c:textUp="▷▷"
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_right"
+    style="?attr/cpp_button_style_control"
+    a:text="▷"
+    c:directionTextScale="0.5"
+    c:textUp="▷▷"
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_button_round_brackets.xml

@@ -23,14 +23,14 @@
   -->
 
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_round_brackets"
-	style="?attr/cpp_button_style_digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:text="( )"
-	c:directionTextScale="0.5;0.5;0.5;0.33"
-	c:textDown=")"
-	c:textLeft="(…)"
-	c:textUp="("
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_round_brackets"
+    style="?attr/cpp_button_style_digit"
+    a:text="( )"
+    c:directionTextScale="0.5;0.5;0.5;0.33"
+    c:textDown=")"
+    c:textLeft="(…)"
+    c:textUp="("
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_button_vars.xml

@@ -23,13 +23,13 @@
   -->
 
 <org.solovyev.android.calculator.drag.DirectionDragButton
-	a:id="@id/cpp_button_vars"
-	style="?attr/cpp_button_style_control"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	xmlns:c="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	a:text="π,…"
-	a:textStyle="italic"
-	c:directionTextScale="0.4"
-	c:textUp="+π"
-	tools:ignore="HardcodedText" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:c="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@id/cpp_button_vars"
+    style="?attr/cpp_button_style_control"
+    a:text="π,…"
+    a:textStyle="italic"
+    c:directionTextScale="0.4"
+    c:textUp="+π"
+    tools:ignore="HardcodedText" />

android-app/src/main/res/layout/cpp_app_display.xml

@@ -23,11 +23,11 @@
   -->
 
 <org.solovyev.android.calculator.AndroidCalculatorDisplayView
-	a:id="@+id/calculator_display"
-	style="@style/CppText.Display"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:inputType="textMultiLine"
-	a:maxLines="3"
-	a:padding="@dimen/cpp_display_padding"
-	a:scrollHorizontally="false"
-	a:scrollbars="none" />
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@+id/calculator_display"
+    style="@style/CppText.Display"
+    a:inputType="textMultiLine"
+    a:maxLines="3"
+    a:padding="@dimen/cpp_display_padding"
+    a:scrollHorizontally="false"
+    a:scrollbars="none" />

android-app/src/main/res/layout/cpp_app_display_mobile.xml

@@ -22,11 +22,12 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<org.solovyev.android.calculator.AndroidCalculatorDisplayView a:id="@+id/calculator_display"
-	style="@style/CppText.Display"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:inputType="textMultiLine"
-	a:maxLines="3"
-	a:padding="@dimen/cpp_display_padding"
-	a:scrollHorizontally="false"
-	a:scrollbars="none" />
+<org.solovyev.android.calculator.AndroidCalculatorDisplayView
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@+id/calculator_display"
+    style="@style/CppText.Display"
+    a:inputType="textMultiLine"
+    a:maxLines="3"
+    a:padding="@dimen/cpp_display_padding"
+    a:scrollHorizontally="false"
+    a:scrollbars="none" />

android-app/src/main/res/layout/cpp_app_editor.xml

@@ -22,19 +22,20 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<LinearLayout a:id="@+id/main_fragment_layout"
-	style="@style/CppFragment"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:padding="@dimen/cpp_editor_padding">
+<LinearLayout
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@+id/main_fragment_layout"
+    style="@style/CppFragment"
+    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/CppText.Editor"
-		a:hint="@string/c_calc_editor_hint"
-		a:scrollbars="vertical"
-		a:singleLine="false"
-		a:textIsSelectable="true" />
+    <org.solovyev.android.calculator.AndroidCalculatorEditorView
+        a:id="@+id/calculator_editor"
+        style="@style/CppText.Editor"
+        a:hint="@string/c_calc_editor_hint"
+        a:scrollbars="vertical"
+        a:singleLine="false"
+        a:textIsSelectable="true" />
 
 </LinearLayout>

android-app/src/main/res/layout/cpp_app_editor_mobile.xml

@@ -22,19 +22,20 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<LinearLayout a:id="@+id/main_fragment_layout"
-	style="@style/CppFragment"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:padding="@dimen/cpp_editor_padding">
+<LinearLayout
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@+id/main_fragment_layout"
+    style="@style/CppFragment"
+    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/CppText.Editor.Mobile"
-		a:hint="@string/c_calc_editor_hint"
-		a:scrollbars="vertical"
-		a:singleLine="false"
-		a:textIsSelectable="true" />
+    <org.solovyev.android.calculator.AndroidCalculatorEditorView
+        a:id="@+id/calculator_editor"
+        style="@style/CppText.Editor.Mobile"
+        a:hint="@string/c_calc_editor_hint"
+        a:scrollbars="vertical"
+        a:singleLine="false"
+        a:textIsSelectable="true" />
 
 </LinearLayout>

android-app/src/main/res/layout/cpp_app_keyboard.xml

@@ -23,94 +23,94 @@
   -->
 
 <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_width="match_parent"
-		a:layout_height="0dp"
-		a:layout_weight="1">
+    <LinearLayout
+        a:layout_width="match_parent"
+        a:layout_height="0dp"
+        a:layout_weight="1">
 
-		<include layout="@layout/cpp_app_button_7" />
+        <include layout="@layout/cpp_app_button_7" />
 
-		<include layout="@layout/cpp_app_button_8" />
+        <include layout="@layout/cpp_app_button_8" />
 
-		<include layout="@layout/cpp_app_button_9" />
+        <include layout="@layout/cpp_app_button_9" />
 
-		<include layout="@layout/cpp_app_button_multiplication" />
+        <include layout="@layout/cpp_app_button_multiplication" />
 
-		<include layout="@layout/cpp_app_button_clear" />
+        <include layout="@layout/cpp_app_button_clear" />
 
-	</LinearLayout>
+    </LinearLayout>
 
-	<LinearLayout
-		a:layout_width="match_parent"
-		a:layout_height="0dp"
-		a:layout_weight="1">
+    <LinearLayout
+        a:layout_width="match_parent"
+        a:layout_height="0dp"
+        a:layout_weight="1">
 
-		<include layout="@layout/cpp_app_button_4" />
+        <include layout="@layout/cpp_app_button_4" />
 
-		<include layout="@layout/cpp_app_button_5" />
+        <include layout="@layout/cpp_app_button_5" />
 
-		<include layout="@layout/cpp_app_button_6" />
+        <include layout="@layout/cpp_app_button_6" />
 
-		<include layout="@layout/cpp_app_button_division" />
+        <include layout="@layout/cpp_app_button_division" />
 
-		<include layout="@layout/cpp_app_button_erase" />
+        <include layout="@layout/cpp_app_button_erase" />
 
-	</LinearLayout>
+    </LinearLayout>
 
-	<LinearLayout
-		a:layout_width="match_parent"
-		a:layout_height="0dp"
-		a:layout_weight="1">
+    <LinearLayout
+        a:layout_width="match_parent"
+        a:layout_height="0dp"
+        a:layout_weight="1">
 
-		<include layout="@layout/cpp_app_button_1" />
+        <include layout="@layout/cpp_app_button_1" />
 
-		<include layout="@layout/cpp_app_button_2" />
+        <include layout="@layout/cpp_app_button_2" />
 
-		<include layout="@layout/cpp_app_button_3" />
+        <include layout="@layout/cpp_app_button_3" />
 
-		<include layout="@layout/cpp_app_button_plus" />
+        <include layout="@layout/cpp_app_button_plus" />
 
-		<include layout="@layout/cpp_app_button_copy" />
+        <include layout="@layout/cpp_app_button_copy" />
 
-	</LinearLayout>
+    </LinearLayout>
 
-	<LinearLayout
-		a:layout_width="match_parent"
-		a:layout_height="0dp"
-		a:layout_weight="1">
+    <LinearLayout
+        a:layout_width="match_parent"
+        a:layout_height="0dp"
+        a:layout_weight="1">
 
-		<include layout="@layout/cpp_app_button_round_brackets" />
+        <include layout="@layout/cpp_app_button_round_brackets" />
 
-		<include layout="@layout/cpp_app_button_0" />
+        <include layout="@layout/cpp_app_button_0" />
 
-		<include layout="@layout/cpp_app_button_dot" />
+        <include layout="@layout/cpp_app_button_dot" />
 
-		<include layout="@layout/cpp_app_button_minus" />
+        <include layout="@layout/cpp_app_button_minus" />
 
-		<include layout="@layout/cpp_app_button_paste" />
+        <include layout="@layout/cpp_app_button_paste" />
 
-	</LinearLayout>
+    </LinearLayout>
 
 
-	<LinearLayout
-		a:layout_width="match_parent"
-		a:layout_height="0dp"
-		a:layout_weight="1">
+    <LinearLayout
+        a:layout_width="match_parent"
+        a:layout_height="0dp"
+        a:layout_weight="1">
 
-		<include layout="@layout/cpp_app_button_left" />
+        <include layout="@layout/cpp_app_button_left" />
 
-		<include layout="@layout/cpp_app_button_right" />
+        <include layout="@layout/cpp_app_button_right" />
 
-		<include layout="@layout/cpp_app_button_vars" />
+        <include layout="@layout/cpp_app_button_vars" />
 
-		<include layout="@layout/cpp_app_button_functions" />
+        <include layout="@layout/cpp_app_button_functions" />
 
-		<include layout="@layout/cpp_app_button_history" />
+        <include layout="@layout/cpp_app_button_history" />
 
-	</LinearLayout>
+    </LinearLayout>
 
 </LinearLayout>

android-app/src/main/res/layout/cpp_app_keyboard_mobile.xml

@@ -23,94 +23,94 @@
   -->
 
 <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_width="match_parent"
-		a:layout_height="0dp"
-		a:layout_weight="1">
+    <LinearLayout
+        a:layout_width="match_parent"
+        a:layout_height="0dp"
+        a:layout_weight="1">
 
-		<include layout="@layout/cpp_app_button_7" />
+        <include layout="@layout/cpp_app_button_7" />
 
-		<include layout="@layout/cpp_app_button_8" />
+        <include layout="@layout/cpp_app_button_8" />
 
-		<include layout="@layout/cpp_app_button_9" />
+        <include layout="@layout/cpp_app_button_9" />
 
-		<include layout="@layout/cpp_app_button_multiplication" />
+        <include layout="@layout/cpp_app_button_multiplication" />
 
-		<include layout="@layout/cpp_app_button_clear" />
+        <include layout="@layout/cpp_app_button_clear" />
 
-	</LinearLayout>
+    </LinearLayout>
 
-	<LinearLayout
-		a:layout_width="match_parent"
-		a:layout_height="0dp"
-		a:layout_weight="1">
+    <LinearLayout
+        a:layout_width="match_parent"
+        a:layout_height="0dp"
+        a:layout_weight="1">
 
-		<include layout="@layout/cpp_app_button_4" />
+        <include layout="@layout/cpp_app_button_4" />
 
-		<include layout="@layout/cpp_app_button_5" />
+        <include layout="@layout/cpp_app_button_5" />
 
-		<include layout="@layout/cpp_app_button_6" />
+        <include layout="@layout/cpp_app_button_6" />
 
-		<include layout="@layout/cpp_app_button_division" />
+        <include layout="@layout/cpp_app_button_division" />
 
-		<include layout="@layout/cpp_app_button_erase" />
+        <include layout="@layout/cpp_app_button_erase" />
 
-	</LinearLayout>
+    </LinearLayout>
 
-	<LinearLayout
-		a:layout_width="match_parent"
-		a:layout_height="0dp"
-		a:layout_weight="1">
+    <LinearLayout
+        a:layout_width="match_parent"
+        a:layout_height="0dp"
+        a:layout_weight="1">
 
-		<include layout="@layout/cpp_app_button_1" />
+        <include layout="@layout/cpp_app_button_1" />
 
-		<include layout="@layout/cpp_app_button_2" />
+        <include layout="@layout/cpp_app_button_2" />
 
-		<include layout="@layout/cpp_app_button_3" />
+        <include layout="@layout/cpp_app_button_3" />
 
-		<include layout="@layout/cpp_app_button_plus" />
+        <include layout="@layout/cpp_app_button_plus" />
 
-		<include layout="@layout/cpp_app_button_copy" />
+        <include layout="@layout/cpp_app_button_copy" />
 
-	</LinearLayout>
+    </LinearLayout>
 
-	<LinearLayout
-		a:layout_width="match_parent"
-		a:layout_height="0dp"
-		a:layout_weight="1">
+    <LinearLayout
+        a:layout_width="match_parent"
+        a:layout_height="0dp"
+        a:layout_weight="1">
 
-		<include layout="@layout/cpp_app_button_round_brackets" />
+        <include layout="@layout/cpp_app_button_round_brackets" />
 
-		<include layout="@layout/cpp_app_button_0" />
+        <include layout="@layout/cpp_app_button_0" />
 
-		<include layout="@layout/cpp_app_button_dot" />
+        <include layout="@layout/cpp_app_button_dot" />
 
-		<include layout="@layout/cpp_app_button_minus" />
+        <include layout="@layout/cpp_app_button_minus" />
 
-		<include layout="@layout/cpp_app_button_paste" />
+        <include layout="@layout/cpp_app_button_paste" />
 
-	</LinearLayout>
+    </LinearLayout>
 
 
-	<LinearLayout
-		a:layout_width="match_parent"
-		a:layout_height="0dp"
-		a:layout_weight="1">
+    <LinearLayout
+        a:layout_width="match_parent"
+        a:layout_height="0dp"
+        a:layout_weight="1">
 
-		<include layout="@layout/cpp_app_button_left" />
+        <include layout="@layout/cpp_app_button_left" />
 
-		<include layout="@layout/cpp_app_button_right" />
+        <include layout="@layout/cpp_app_button_right" />
 
-		<include layout="@layout/cpp_app_button_vars" />
+        <include layout="@layout/cpp_app_button_vars" />
 
-		<include layout="@layout/cpp_app_button_functions" />
+        <include layout="@layout/cpp_app_button_functions" />
 
-		<include layout="@layout/cpp_app_button_history" />
+        <include layout="@layout/cpp_app_button_history" />
 
-	</LinearLayout>
+    </LinearLayout>
 
 </LinearLayout>

android-app/src/main/res/layout/cpp_dialog.xml

@@ -22,9 +22,10 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<LinearLayout a:id="@+id/dialog_layout"
-	style="@style/CppDialog"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:orientation="vertical">
+<LinearLayout
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@+id/dialog_layout"
+    style="@style/CppDialog"
+    a:orientation="vertical">
 
 </LinearLayout>

android-app/src/main/res/layout/cpp_dialog_fragment.xml

@@ -22,41 +22,42 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<LinearLayout a:id="@+id/main_fragment_layout"
-	style="@style/CppFragment"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:layout_gravity="center_horizontal"
-	a:orientation="vertical">
+<LinearLayout
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@+id/main_fragment_layout"
+    style="@style/CppFragment"
+    a:layout_width="match_parent"
+    a:layout_height="match_parent"
+    a:layout_gravity="center_horizontal"
+    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" />
+    <TextView
+        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">
+    <LinearLayout
+        a:layout_width="match_parent"
+        a:layout_height="wrap_content"
+        a:orientation="horizontal">
 
-		<Button
-			a:id="@+id/cpp_copy_button"
-			a:layout_width="0dp"
-			a:layout_height="wrap_content"
-			a:layout_weight="1"
-			a:text="@string/c_copy"
-			a:visibility="gone" />
+        <Button
+            a:id="@+id/cpp_copy_button"
+            a:layout_width="0dp"
+            a:layout_height="wrap_content"
+            a:layout_weight="1"
+            a:text="@string/c_copy"
+            a:visibility="gone" />
 
-		<Button
-			a:id="@+id/cpp_ok_button"
-			a:layout_width="0dp"
-			a:layout_height="wrap_content"
-			a:layout_weight="1"
-			a:text="@string/ok" />
+        <Button
+            a:id="@+id/cpp_ok_button"
+            a:layout_width="0dp"
+            a:layout_height="wrap_content"
+            a:layout_weight="1"
+            a:text="@string/ok" />
 
-	</LinearLayout>
+    </LinearLayout>
 
 </LinearLayout>

android-app/src/main/res/layout/cpp_fixable_messages_dialog.xml

@@ -22,33 +22,34 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<LinearLayout style="@style/CppDialog"
-	xmlns:a="http://schemas.android.com/apk/res/android">
+<LinearLayout
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    style="@style/CppDialog">
 
-	<LinearLayout
-		a:id="@+id/cpp_fixable_messages_container"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:orientation="vertical" />
+    <LinearLayout
+        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:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:text="@string/do_not_show_messages_in_session" />
+    <CheckBox
+        a:id="@+id/cpp_do_not_show_fixable_messages_checkbox"
+        a:layout_width="match_parent"
+        a:layout_height="wrap_content"
+        a:text="@string/do_not_show_messages_in_session" />
 
-	<LinearLayout
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:gravity="center"
-		a:orientation="horizontal">
+    <LinearLayout
+        a:layout_width="match_parent"
+        a:layout_height="wrap_content"
+        a:gravity="center"
+        a:orientation="horizontal">
 
-		<Button
-			a:id="@+id/close_button"
-			a:layout_width="wrap_content"
-			a:layout_height="wrap_content"
-			a:text="@string/close" />
+        <Button
+            a:id="@+id/close_button"
+            a:layout_width="wrap_content"
+            a:layout_height="wrap_content"
+            a:text="@string/close" />
 
-	</LinearLayout>
+    </LinearLayout>
 
 </LinearLayout>

android-app/src/main/res/layout/cpp_fixable_messages_dialog_message.xml

@@ -23,24 +23,24 @@
   -->
 
 <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_gravity="fill"
-		a:layout_weight="5"
-		a:text="@+id/cpp_fixable_messages_text_view" />
+    <TextView
+        a:id="@+id/cpp_fixable_messages_text_view"
+        a:layout_width="0dp"
+        a:layout_height="wrap_content"
+        a:layout_gravity="fill"
+        a:layout_weight="5"
+        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" />
+    <Button
+        a:id="@+id/cpp_fix_button"
+        a:layout_width="0dp"
+        a:layout_height="wrap_content"
+        a:layout_weight="2"
+        a:text="@string/fix" />
 
 </LinearLayout>

android-app/src/main/res/layout/cpp_plot_fragment.xml

@@ -22,19 +22,20 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<LinearLayout a:id="@+id/main_fragment_layout"
-	style="@style/CppFragment"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent">
+<LinearLayout
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@+id/main_fragment_layout"
+    style="@style/CppFragment"
+    a:layout_width="match_parent"
+    a:layout_height="match_parent">
 
-	<TextView
-		a:id="@+id/fragment_title"
-		style="@style/CppFragmentTitle"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content" />
+    <TextView
+        a:id="@+id/fragment_title"
+        style="@style/CppFragmentTitle"
+        a:layout_width="match_parent"
+        a:layout_height="wrap_content" />
 
-	<include layout="@layout/ad" />
+    <include layout="@layout/ad" />
 
 
 </LinearLayout>

android-app/src/main/res/layout/cpp_plot_function_list_item.xml

@@ -23,36 +23,36 @@
   -->
 
 <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" />
+    <TextView
+        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" />
+    <CheckBox
+        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" />
+    <CheckBox
+        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:paddingBottom="0dp"
-		a:paddingTop="0dp"
-		a:scaleType="centerInside"
-		a:src="@drawable/kb_settings" />
+    <ImageButton
+        a:id="@+id/cpp_plot_function_settings_button"
+        a:layout_width="0dp"
+        a:layout_height="wrap_content"
+        a:layout_weight="1"
+        a:paddingBottom="0dp"
+        a:paddingTop="0dp"
+        a:scaleType="centerInside"
+        a:src="@drawable/kb_settings" />
 
 </LinearLayout>

android-app/src/main/res/layout/cpp_plot_function_settings_dialog.xml

@@ -22,8 +22,9 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<LinearLayout a:id="@+id/dialog_layout"
-	style="@style/CppDialog"
-	xmlns:a="http://schemas.android.com/apk/res/android">
+<LinearLayout
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@+id/dialog_layout"
+    style="@style/CppDialog">
 
 </LinearLayout>

android-app/src/main/res/layout/cpp_plot_function_settings_fragment.xml

@@ -22,63 +22,64 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<LinearLayout a:id="@+id/main_fragment_layout"
-	style="@style/CppFragment"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="wrap_content"
-	a:layout_height="match_parent"
-	a:layout_gravity="center_horizontal"
-	a:orientation="vertical">
+<LinearLayout
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@+id/main_fragment_layout"
+    style="@style/CppFragment"
+    a:layout_width="wrap_content"
+    a:layout_height="match_parent"
+    a:layout_gravity="center_horizontal"
+    a:orientation="vertical">
 
-	<include layout="@layout/ad" />
+    <include layout="@layout/ad" />
 
-	<TextView
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:text="@string/cpp_plot_function_line_color_type" />
+    <TextView
+        a:layout_width="match_parent"
+        a:layout_height="wrap_content"
+        a:text="@string/cpp_plot_function_line_color_type" />
 
-	<Spinner
-		a:id="@+id/cpp_plot_function_line_color_type_spinner"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:entries="@array/cpp_plot_line_color_type_names" />
+    <Spinner
+        a:id="@+id/cpp_plot_function_line_color_type_spinner"
+        a:layout_width="match_parent"
+        a:layout_height="wrap_content"
+        a:entries="@array/cpp_plot_line_color_type_names" />
 
-	<TextView
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:text="@string/cpp_plot_function_line_color" />
+    <TextView
+        a:layout_width="match_parent"
+        a:layout_height="wrap_content"
+        a:text="@string/cpp_plot_function_line_color" />
 
-	<Spinner
-		a:id="@+id/cpp_plot_function_line_color_spinner"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:entries="@array/cpp_plot_line_color_names" />
+    <Spinner
+        a:id="@+id/cpp_plot_function_line_color_spinner"
+        a:layout_width="match_parent"
+        a:layout_height="wrap_content"
+        a:entries="@array/cpp_plot_line_color_names" />
 
-	<TextView
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:text="@string/cpp_plot_function_line_style" />
+    <TextView
+        a:layout_width="match_parent"
+        a:layout_height="wrap_content"
+        a:text="@string/cpp_plot_function_line_style" />
 
-	<Spinner
-		a:id="@+id/cpp_plot_function_line_style_spinner"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:entries="@array/cpp_plot_line_style_names" />
+    <Spinner
+        a:id="@+id/cpp_plot_function_line_style_spinner"
+        a:layout_width="match_parent"
+        a:layout_height="wrap_content"
+        a:entries="@array/cpp_plot_line_style_names" />
 
-	<TextView
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:text="@string/cpp_plot_function_line_width" />
+    <TextView
+        a:layout_width="match_parent"
+        a:layout_height="wrap_content"
+        a:text="@string/cpp_plot_function_line_width" />
 
-	<SeekBar
-		a:id="@+id/cpp_plot_functions_line_width_seekbar"
-		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" />
 
-	<Button
-		a:id="@+id/cpp_apply_button"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:text="@string/cpp_apply" />
+    <Button
+        a:id="@+id/cpp_apply_button"
+        a:layout_width="match_parent"
+        a:layout_height="wrap_content"
+        a:text="@string/cpp_apply" />
 
 </LinearLayout>

android-app/src/main/res/layout/cpp_plot_functions_fragment.xml

@@ -22,44 +22,45 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<LinearLayout a:id="@+id/main_fragment_layout"
-	style="@style/CppFragment"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent">
+<LinearLayout
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@+id/main_fragment_layout"
+    style="@style/CppFragment"
+    a:layout_width="match_parent"
+    a:layout_height="match_parent">
 
-	<include layout="@layout/ad" />
+    <include layout="@layout/ad" />
 
-	<LinearLayout
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:orientation="horizontal">
+    <LinearLayout
+        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" />
+        <TextView
+            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" />
+        <TextView
+            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" />
+        <TextView
+            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" />
+        <TextView
+            a:layout_width="0dp"
+            a:layout_height="wrap_content"
+            a:layout_weight="1" />
 
-	</LinearLayout>
+    </LinearLayout>
 
-	<ListView style="@style/CppListView" />
+    <ListView style="@style/CppListView" />
 
 </LinearLayout>

android-app/src/main/res/layout/cpp_plot_range_fragment.xml

@@ -22,110 +22,111 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<LinearLayout a:id="@+id/main_fragment_layout"
-	style="@style/CppFragment"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:layout_gravity="center_horizontal"
-	a:orientation="vertical">
+<LinearLayout
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@+id/main_fragment_layout"
+    style="@style/CppFragment"
+    a:layout_width="match_parent"
+    a:layout_height="match_parent"
+    a:layout_gravity="center_horizontal"
+    a:orientation="vertical">
 
-	<include layout="@layout/ad" />
+    <include layout="@layout/ad" />
 
-	<LinearLayout
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:baselineAligned="false"
-		a:orientation="horizontal">
+    <LinearLayout
+        a:layout_width="match_parent"
+        a:layout_height="wrap_content"
+        a:baselineAligned="false"
+        a:orientation="horizontal">
 
-		<LinearLayout
-			a:layout_width="0dp"
-			a:layout_height="wrap_content"
-			a:layout_weight="1"
-			a:orientation="vertical">
+        <LinearLayout
+            a:layout_width="0dp"
+            a:layout_height="wrap_content"
+            a:layout_weight="1"
+            a:orientation="vertical">
 
-			<TextView
-				a:layout_width="match_parent"
-				a:layout_height="wrap_content"
-				a:text="@string/cpp_plot_range_x_min" />
+            <TextView
+                a:layout_width="match_parent"
+                a:layout_height="wrap_content"
+                a:text="@string/cpp_plot_range_x_min" />
 
-			<EditText
-				a:id="@+id/cpp_plot_range_x_min_editext"
-				a:layout_width="match_parent"
-				a:layout_height="wrap_content"
-				a:inputType="numberDecimal|numberSigned" />
-		</LinearLayout>
+            <EditText
+                a:id="@+id/cpp_plot_range_x_min_editext"
+                a:layout_width="match_parent"
+                a:layout_height="wrap_content"
+                a:inputType="numberDecimal|numberSigned" />
+        </LinearLayout>
 
-		<LinearLayout
-			a:layout_width="0dp"
-			a:layout_height="wrap_content"
-			a:layout_weight="1"
-			a:orientation="vertical">
+        <LinearLayout
+            a:layout_width="0dp"
+            a:layout_height="wrap_content"
+            a:layout_weight="1"
+            a:orientation="vertical">
 
-			<TextView
-				a:layout_width="match_parent"
-				a:layout_height="wrap_content"
-				a:text="@string/cpp_plot_range_x_max" />
+            <TextView
+                a:layout_width="match_parent"
+                a:layout_height="wrap_content"
+                a:text="@string/cpp_plot_range_x_max" />
 
-			<EditText
-				a:id="@+id/cpp_plot_range_x_max_editext"
-				a:layout_width="match_parent"
-				a:layout_height="wrap_content"
-				a:inputType="numberDecimal|numberSigned" />
-		</LinearLayout>
+            <EditText
+                a:id="@+id/cpp_plot_range_x_max_editext"
+                a:layout_width="match_parent"
+                a:layout_height="wrap_content"
+                a:inputType="numberDecimal|numberSigned" />
+        </LinearLayout>
 
 
-	</LinearLayout>
+    </LinearLayout>
 
-	<LinearLayout
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:baselineAligned="false"
-		a:orientation="horizontal">
+    <LinearLayout
+        a:layout_width="match_parent"
+        a:layout_height="wrap_content"
+        a:baselineAligned="false"
+        a:orientation="horizontal">
 
-		<LinearLayout
-			a:layout_width="0dp"
-			a:layout_height="wrap_content"
-			a:layout_weight="1"
-			a:orientation="vertical">
+        <LinearLayout
+            a:layout_width="0dp"
+            a:layout_height="wrap_content"
+            a:layout_weight="1"
+            a:orientation="vertical">
 
-			<TextView
-				a:layout_width="match_parent"
-				a:layout_height="wrap_content"
-				a:text="@string/cpp_plot_range_y_min" />
+            <TextView
+                a:layout_width="match_parent"
+                a:layout_height="wrap_content"
+                a:text="@string/cpp_plot_range_y_min" />
 
-			<EditText
-				a:id="@+id/cpp_plot_range_y_min_editext"
-				a:layout_width="match_parent"
-				a:layout_height="wrap_content"
-				a:inputType="numberDecimal|numberSigned" />
-		</LinearLayout>
+            <EditText
+                a:id="@+id/cpp_plot_range_y_min_editext"
+                a:layout_width="match_parent"
+                a:layout_height="wrap_content"
+                a:inputType="numberDecimal|numberSigned" />
+        </LinearLayout>
 
-		<LinearLayout
-			a:layout_width="0dp"
-			a:layout_height="wrap_content"
-			a:layout_weight="1"
-			a:orientation="vertical">
+        <LinearLayout
+            a:layout_width="0dp"
+            a:layout_height="wrap_content"
+            a:layout_weight="1"
+            a:orientation="vertical">
 
-			<TextView
-				a:layout_width="match_parent"
-				a:layout_height="wrap_content"
-				a:text="@string/cpp_plot_range_y_max" />
+            <TextView
+                a:layout_width="match_parent"
+                a:layout_height="wrap_content"
+                a:text="@string/cpp_plot_range_y_max" />
 
-			<EditText
-				a:id="@+id/cpp_plot_range_y_max_editext"
-				a:layout_width="match_parent"
-				a:layout_height="wrap_content"
-				a:inputType="numberDecimal|numberSigned" />
-		</LinearLayout>
+            <EditText
+                a:id="@+id/cpp_plot_range_y_max_editext"
+                a:layout_width="match_parent"
+                a:layout_height="wrap_content"
+                a:inputType="numberDecimal|numberSigned" />
+        </LinearLayout>
 
 
-	</LinearLayout>
+    </LinearLayout>
 
-	<Button
-		a:id="@+id/cpp_apply_button"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:text="@string/cpp_apply" />
+    <Button
+        a:id="@+id/cpp_apply_button"
+        a:layout_width="match_parent"
+        a:layout_height="wrap_content"
+        a:text="@string/cpp_apply" />
 
 </LinearLayout>

android-app/src/main/res/layout/cpp_plotter_fragment.xml

@@ -23,56 +23,56 @@
   -->
 
 <LinearLayout
-	a:id="@+id/main_fragment_layout"
-	style="@style/CppFragment"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent">
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@+id/main_fragment_layout"
+    style="@style/CppFragment"
+    a:layout_width="match_parent"
+    a:layout_height="match_parent">
 
-	<TextView
-		a:id="@+id/fragment_title"
-		style="@style/CppFragmentTitle"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"/>
+    <TextView
+        a:id="@+id/fragment_title"
+        style="@style/CppFragmentTitle"
+        a:layout_width="match_parent"
+        a:layout_height="wrap_content" />
 
-	<include layout="@layout/ad"/>
+    <include layout="@layout/ad" />
 
-	<org.solovyev.android.plotter.PlotView
-		a:id="@+id/plotview"
-		a:layout_width="match_parent"
-		a:layout_height="0dp"
-		a:layout_weight="1"/>
+    <org.solovyev.android.plotter.PlotView
+        a:id="@+id/plotview"
+        a:layout_width="match_parent"
+        a:layout_height="0dp"
+        a:layout_weight="1" />
 
-	<LinearLayout
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:background="@android:color/black"
-		a:gravity="center"
-		a:orientation="horizontal">
+    <LinearLayout
+        a:layout_width="match_parent"
+        a:layout_height="wrap_content"
+        a:background="@android:color/black"
+        a:gravity="center"
+        a:orientation="horizontal">
 
-		<Button
-			a:id="@+id/zoom_out_button"
-			a:layout_width="wrap_content"
-			a:layout_height="wrap_content"
-			a:text="-"/>
+        <Button
+            a:id="@+id/zoom_out_button"
+            a:layout_width="wrap_content"
+            a:layout_height="wrap_content"
+            a:text="-" />
 
-		<Button
-			a:id="@+id/zoom_0_button"
-			a:layout_width="wrap_content"
-			a:layout_height="wrap_content"
-			a:text="0"/>
+        <Button
+            a:id="@+id/zoom_0_button"
+            a:layout_width="wrap_content"
+            a:layout_height="wrap_content"
+            a:text="0" />
 
-		<Button
-			a:id="@+id/zoom_in_button"
-			a:layout_width="wrap_content"
-			a:layout_height="wrap_content"
-			a:text="+"/>
+        <Button
+            a:id="@+id/zoom_in_button"
+            a:layout_width="wrap_content"
+            a:layout_height="wrap_content"
+            a:text="+" />
 
-		<Button
-			a:id="@+id/plot_mode_button"
-			a:layout_width="wrap_content"
-			a:layout_height="wrap_content"
-			a:text="2D/3D"/>
-	</LinearLayout>
+        <Button
+            a:id="@+id/plot_mode_button"
+            a:layout_width="wrap_content"
+            a:layout_height="wrap_content"
+            a:text="2D/3D" />
+    </LinearLayout>
 
 </LinearLayout>

android-app/src/main/res/layout/cpp_purchase_dialog_fragment.xml

@@ -22,26 +22,27 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<LinearLayout a:id="@+id/main_fragment_layout"
-	style="@style/CppFragment"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:layout_gravity="center_horizontal"
-	a:orientation="vertical">
+<LinearLayout
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@+id/main_fragment_layout"
+    style="@style/CppFragment"
+    a:layout_width="match_parent"
+    a:layout_height="match_parent"
+    a:layout_gravity="center_horizontal"
+    a:orientation="vertical">
 
-	<TextView
-		a:id="@+id/cpp_purchase_text"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:maxLines="10"
-		a:scrollbars="vertical"
-		a:text="@string/cpp_purchase_text" />
+    <TextView
+        a:id="@+id/cpp_purchase_text"
+        a:layout_width="match_parent"
+        a:layout_height="wrap_content"
+        a:maxLines="10"
+        a:scrollbars="vertical"
+        a:text="@string/cpp_purchase_text" />
 
-	<Button
-		a:id="@+id/cpp_continue_button"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:text="@string/cpp_continue" />
+    <Button
+        a:id="@+id/cpp_continue_button"
+        a:layout_width="match_parent"
+        a:layout_height="wrap_content"
+        a:text="@string/cpp_continue" />
 
 </LinearLayout>

android-app/src/main/res/layout/cpp_release_note_step.xml

@@ -23,23 +23,23 @@
   -->
 
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-	a:layout_width="match_parent"
-	a:layout_height="match_parent"
-	a:gravity="center"
-	a:orientation="vertical">
+    a:layout_width="match_parent"
+    a:layout_height="match_parent"
+    a:gravity="center"
+    a:orientation="vertical">
 
-	<TextView
-		a:id="@+id/release_note_title"
-		style="@style/WizardLabel"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:textAppearance="@android:style/TextAppearance.Large" />
+    <TextView
+        a:id="@+id/release_note_title"
+        style="@style/WizardLabel"
+        a:layout_width="match_parent"
+        a:layout_height="wrap_content"
+        a:textAppearance="@android:style/TextAppearance.Large" />
 
-	<TextView
-		a:id="@+id/release_note_message"
-		style="@style/WizardLabel.Last"
-		a:layout_width="match_parent"
-		a:layout_height="wrap_content"
-		a:textAppearance="@android:style/TextAppearance.Medium" />
+    <TextView
+        a:id="@+id/release_note_message"
+        style="@style/WizardLabel.Last"
+        a:layout_width="match_parent"
+        a:layout_height="wrap_content"
+        a:textAppearance="@android:style/TextAppearance.Medium" />
 
 </LinearLayout>

android-app/src/main/res/layout/cpp_simple_button_0.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_0"
-	style="@style/CppKeyboardButton.Metro.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="0" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_0"
+    style="@style/CppKeyboardButton.Metro.Simple.Digit"
+    a:text="0" />

android-app/src/main/res/layout/cpp_simple_button_0_material.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_0"
-	style="@style/CppKeyboardButton.Material.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="0" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_0"
+    style="@style/CppKeyboardButton.Material.Simple.Digit"
+    a:text="0" />

android-app/src/main/res/layout/cpp_simple_button_0_material_light.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_0"
-	style="@style/CppKeyboardButton.Material.Light.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="0" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_0"
+    style="@style/CppKeyboardButton.Material.Light.Simple.Digit"
+    a:text="0" />

android-app/src/main/res/layout/cpp_simple_button_1.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_1"
-	style="@style/CppKeyboardButton.Metro.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="1" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_1"
+    style="@style/CppKeyboardButton.Metro.Simple.Digit"
+    a:text="1" />

android-app/src/main/res/layout/cpp_simple_button_1_material.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_1"
-	style="@style/CppKeyboardButton.Material.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="1" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_1"
+    style="@style/CppKeyboardButton.Material.Simple.Digit"
+    a:text="1" />

android-app/src/main/res/layout/cpp_simple_button_1_material_light.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_1"
-	style="@style/CppKeyboardButton.Material.Light.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="1" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_1"
+    style="@style/CppKeyboardButton.Material.Light.Simple.Digit"
+    a:text="1" />

android-app/src/main/res/layout/cpp_simple_button_2.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_2"
-	style="@style/CppKeyboardButton.Metro.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="2" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_2"
+    style="@style/CppKeyboardButton.Metro.Simple.Digit"
+    a:text="2" />

android-app/src/main/res/layout/cpp_simple_button_2_material.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_2"
-	style="@style/CppKeyboardButton.Material.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="2" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_2"
+    style="@style/CppKeyboardButton.Material.Simple.Digit"
+    a:text="2" />

android-app/src/main/res/layout/cpp_simple_button_2_material_light.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_2"
-	style="@style/CppKeyboardButton.Material.Light.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="2" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_2"
+    style="@style/CppKeyboardButton.Material.Light.Simple.Digit"
+    a:text="2" />

android-app/src/main/res/layout/cpp_simple_button_3.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_3"
-	style="@style/CppKeyboardButton.Metro.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="3" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_3"
+    style="@style/CppKeyboardButton.Metro.Simple.Digit"
+    a:text="3" />

android-app/src/main/res/layout/cpp_simple_button_3_material.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_3"
-	style="@style/CppKeyboardButton.Material.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="3" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_3"
+    style="@style/CppKeyboardButton.Material.Simple.Digit"
+    a:text="3" />

android-app/src/main/res/layout/cpp_simple_button_3_material_light.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_3"
-	style="@style/CppKeyboardButton.Material.Light.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="3" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_3"
+    style="@style/CppKeyboardButton.Material.Light.Simple.Digit"
+    a:text="3" />

android-app/src/main/res/layout/cpp_simple_button_4.xml

@@ -21,7 +21,8 @@
   ~ Email: se.solovyev@gmail.com
   ~ Site:  http://se.solovyev.org
   -->
-<Button a:id="@id/cpp_button_4"
-	style="@style/CppKeyboardButton.Metro.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="4" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_4"
+    style="@style/CppKeyboardButton.Metro.Simple.Digit"
+    a:text="4" />

android-app/src/main/res/layout/cpp_simple_button_4_material.xml

@@ -21,7 +21,8 @@
   ~ Email: se.solovyev@gmail.com
   ~ Site:  http://se.solovyev.org
   -->
-<Button a:id="@id/cpp_button_4"
-	style="@style/CppKeyboardButton.Material.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="4" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_4"
+    style="@style/CppKeyboardButton.Material.Simple.Digit"
+    a:text="4" />

android-app/src/main/res/layout/cpp_simple_button_4_material_light.xml

@@ -21,7 +21,8 @@
   ~ Email: se.solovyev@gmail.com
   ~ Site:  http://se.solovyev.org
   -->
-<Button a:id="@id/cpp_button_4"
-	style="@style/CppKeyboardButton.Material.Light.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="4" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_4"
+    style="@style/CppKeyboardButton.Material.Light.Simple.Digit"
+    a:text="4" />

android-app/src/main/res/layout/cpp_simple_button_5.xml

@@ -21,7 +21,8 @@
   ~ Email: se.solovyev@gmail.com
   ~ Site:  http://se.solovyev.org
   -->
-<Button a:id="@id/cpp_button_5"
-	style="@style/CppKeyboardButton.Metro.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="5" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_5"
+    style="@style/CppKeyboardButton.Metro.Simple.Digit"
+    a:text="5" />

android-app/src/main/res/layout/cpp_simple_button_5_material.xml

@@ -21,7 +21,8 @@
   ~ Email: se.solovyev@gmail.com
   ~ Site:  http://se.solovyev.org
   -->
-<Button a:id="@id/cpp_button_5"
-	style="@style/CppKeyboardButton.Material.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="5" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_5"
+    style="@style/CppKeyboardButton.Material.Simple.Digit"
+    a:text="5" />

android-app/src/main/res/layout/cpp_simple_button_5_material_light.xml

@@ -21,7 +21,8 @@
   ~ Email: se.solovyev@gmail.com
   ~ Site:  http://se.solovyev.org
   -->
-<Button a:id="@id/cpp_button_5"
-	style="@style/CppKeyboardButton.Material.Light.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="5" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_5"
+    style="@style/CppKeyboardButton.Material.Light.Simple.Digit"
+    a:text="5" />

android-app/src/main/res/layout/cpp_simple_button_6.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_6"
-	style="@style/CppKeyboardButton.Metro.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="6" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_6"
+    style="@style/CppKeyboardButton.Metro.Simple.Digit"
+    a:text="6" />

android-app/src/main/res/layout/cpp_simple_button_6_material.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_6"
-	style="@style/CppKeyboardButton.Material.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="6" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_6"
+    style="@style/CppKeyboardButton.Material.Simple.Digit"
+    a:text="6" />

android-app/src/main/res/layout/cpp_simple_button_6_material_light.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_6"
-	style="@style/CppKeyboardButton.Material.Light.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="6" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_6"
+    style="@style/CppKeyboardButton.Material.Light.Simple.Digit"
+    a:text="6" />

android-app/src/main/res/layout/cpp_simple_button_7.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_7"
-	style="@style/CppKeyboardButton.Metro.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="7" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_7"
+    style="@style/CppKeyboardButton.Metro.Simple.Digit"
+    a:text="7" />

android-app/src/main/res/layout/cpp_simple_button_7_material.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_7"
-	style="@style/CppKeyboardButton.Material.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="7" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_7"
+    style="@style/CppKeyboardButton.Material.Simple.Digit"
+    a:text="7" />

android-app/src/main/res/layout/cpp_simple_button_7_material_light.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_7"
-	style="@style/CppKeyboardButton.Material.Light.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="7" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_7"
+    style="@style/CppKeyboardButton.Material.Light.Simple.Digit"
+    a:text="7" />

android-app/src/main/res/layout/cpp_simple_button_8.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_8"
-	style="@style/CppKeyboardButton.Metro.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="8" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_8"
+    style="@style/CppKeyboardButton.Metro.Simple.Digit"
+    a:text="8" />

android-app/src/main/res/layout/cpp_simple_button_8_material.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_8"
-	style="@style/CppKeyboardButton.Material.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="8" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_8"
+    style="@style/CppKeyboardButton.Material.Simple.Digit"
+    a:text="8" />

android-app/src/main/res/layout/cpp_simple_button_8_material_light.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_8"
-	style="@style/CppKeyboardButton.Material.Light.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="8" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_8"
+    style="@style/CppKeyboardButton.Material.Light.Simple.Digit"
+    a:text="8" />

android-app/src/main/res/layout/cpp_simple_button_9.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_9"
-	style="@style/CppKeyboardButton.Metro.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="9" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_9"
+    style="@style/CppKeyboardButton.Metro.Simple.Digit"
+    a:text="9" />

android-app/src/main/res/layout/cpp_simple_button_9_material.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_9"
-	style="@style/CppKeyboardButton.Material.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="9" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_9"
+    style="@style/CppKeyboardButton.Material.Simple.Digit"
+    a:text="9" />

android-app/src/main/res/layout/cpp_simple_button_9_material_light.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_9"
-	style="@style/CppKeyboardButton.Material.Light.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="9" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_9"
+    style="@style/CppKeyboardButton.Material.Light.Simple.Digit"
+    a:text="9" />

android-app/src/main/res/layout/cpp_simple_button_app.xml

@@ -22,8 +22,9 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<ImageButton a:id="@id/cpp_button_app"
-	style="@style/CppKeyboardButton.Metro.Simple.Control.Image"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:contentDescription="App"
-	a:src="@drawable/kb_logo" />
+<ImageButton
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_app"
+    style="@style/CppKeyboardButton.Metro.Simple.Control.Image"
+    a:contentDescription="App"
+    a:src="@drawable/kb_logo" />

android-app/src/main/res/layout/cpp_simple_button_app_material.xml

@@ -22,8 +22,9 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<ImageButton a:id="@id/cpp_button_app"
-	style="@style/CppKeyboardButton.Material.Simple.Control.Image"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:contentDescription="App"
-	a:src="@drawable/kb_logo" />
+<ImageButton
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_app"
+    style="@style/CppKeyboardButton.Material.Simple.Control.Image"
+    a:contentDescription="App"
+    a:src="@drawable/kb_logo" />

android-app/src/main/res/layout/cpp_simple_button_app_material_light.xml

@@ -22,8 +22,9 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<ImageButton a:id="@id/cpp_button_app"
-	style="@style/CppKeyboardButton.Material.Light.Simple.Control.Image"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:contentDescription="App"
-	a:src="@drawable/kb_logo" />
+<ImageButton
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_app"
+    style="@style/CppKeyboardButton.Material.Light.Simple.Control.Image"
+    a:contentDescription="App"
+    a:src="@drawable/kb_logo" />

android-app/src/main/res/layout/cpp_simple_button_clear.xml

@@ -22,8 +22,9 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_clear"
-	style="@style/CppKeyboardButton.Metro.Simple.Control"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="@string/c_clear"
-	a:textStyle="bold" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_clear"
+    style="@style/CppKeyboardButton.Metro.Simple.Control"
+    a:text="@string/c_clear"
+    a:textStyle="bold" />

android-app/src/main/res/layout/cpp_simple_button_clear_material.xml

@@ -22,8 +22,9 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_clear"
-	style="@style/CppKeyboardButton.Material.Simple.Control"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="@string/c_clear"
-	a:textStyle="bold" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_clear"
+    style="@style/CppKeyboardButton.Material.Simple.Control"
+    a:text="@string/c_clear"
+    a:textStyle="bold" />

android-app/src/main/res/layout/cpp_simple_button_clear_material_light.xml

@@ -22,8 +22,9 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_clear"
-	style="@style/CppKeyboardButton.Material.Light.Simple.Control"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="@string/c_clear"
-	a:textStyle="bold" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_clear"
+    style="@style/CppKeyboardButton.Material.Light.Simple.Control"
+    a:text="@string/c_clear"
+    a:textStyle="bold" />

android-app/src/main/res/layout/cpp_simple_button_copy.xml

@@ -22,8 +22,9 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<ImageButton a:id="@id/cpp_button_copy"
-	style="@style/CppKeyboardButton.Metro.Simple.Control.Image"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:contentDescription="Copy"
-	a:src="@drawable/kb_copy" />
+<ImageButton
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_copy"
+    style="@style/CppKeyboardButton.Metro.Simple.Control.Image"
+    a:contentDescription="Copy"
+    a:src="@drawable/kb_copy" />

android-app/src/main/res/layout/cpp_simple_button_copy_material.xml

@@ -22,8 +22,9 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<ImageButton a:id="@id/cpp_button_copy"
-	style="@style/CppKeyboardButton.Material.Simple.Control.Image"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:contentDescription="Copy"
-	a:src="@drawable/kb_copy" />
+<ImageButton
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_copy"
+    style="@style/CppKeyboardButton.Material.Simple.Control.Image"
+    a:contentDescription="Copy"
+    a:src="@drawable/kb_copy" />

android-app/src/main/res/layout/cpp_simple_button_copy_material_light.xml

@@ -22,8 +22,9 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<ImageButton a:id="@id/cpp_button_copy"
-	style="@style/CppKeyboardButton.Material.Light.Simple.Control.Image"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:contentDescription="Copy"
-	a:src="@drawable/kb_copy" />
+<ImageButton
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_copy"
+    style="@style/CppKeyboardButton.Material.Light.Simple.Control.Image"
+    a:contentDescription="Copy"
+    a:src="@drawable/kb_copy" />

android-app/src/main/res/layout/cpp_simple_button_division.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_division"
-	style="@style/CppKeyboardButton.Metro.Simple.Operation"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="/" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_division"
+    style="@style/CppKeyboardButton.Metro.Simple.Operation"
+    a:text="/" />

android-app/src/main/res/layout/cpp_simple_button_division_material.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_division"
-	style="@style/CppKeyboardButton.Material.Simple.Operation"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="/" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_division"
+    style="@style/CppKeyboardButton.Material.Simple.Operation"
+    a:text="/" />

android-app/src/main/res/layout/cpp_simple_button_division_material_light.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_division"
-	style="@style/CppKeyboardButton.Material.Light.Simple.Operation"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="/" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_division"
+    style="@style/CppKeyboardButton.Material.Light.Simple.Operation"
+    a:text="/" />

android-app/src/main/res/layout/cpp_simple_button_dot.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_period"
-	style="@style/CppKeyboardButton.Metro.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="." />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_period"
+    style="@style/CppKeyboardButton.Metro.Simple.Digit"
+    a:text="." />

android-app/src/main/res/layout/cpp_simple_button_dot_material.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_period"
-	style="@style/CppKeyboardButton.Material.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="." />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_period"
+    style="@style/CppKeyboardButton.Material.Simple.Digit"
+    a:text="." />

android-app/src/main/res/layout/cpp_simple_button_dot_material_light.xml

@@ -22,7 +22,8 @@
   ~ Site:  http://se.solovyev.org
   -->
 
-<Button a:id="@id/cpp_button_period"
-	style="@style/CppKeyboardButton.Material.Light.Simple.Digit"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="." />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_period"
+    style="@style/CppKeyboardButton.Material.Light.Simple.Digit"
+    a:text="." />

android-app/src/main/res/layout/cpp_simple_button_equals.xml

@@ -21,7 +21,8 @@
   ~ Email: se.solovyev@gmail.com
   ~ Site:  http://se.solovyev.org
   -->
-<Button a:id="@id/cpp_button_equals"
-	style="@style/CppKeyboardButton.Metro.Simple.Control"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="=" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_equals"
+    style="@style/CppKeyboardButton.Metro.Simple.Control"
+    a:text="=" />

android-app/src/main/res/layout/cpp_simple_button_equals_material.xml

@@ -21,7 +21,8 @@
   ~ Email: se.solovyev@gmail.com
   ~ Site:  http://se.solovyev.org
   -->
-<Button a:id="@id/cpp_button_equals"
-	style="@style/CppKeyboardButton.Material.Simple.Control"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="=" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_equals"
+    style="@style/CppKeyboardButton.Material.Simple.Control"
+    a:text="=" />

android-app/src/main/res/layout/cpp_simple_button_equals_material_light.xml

@@ -21,7 +21,8 @@
   ~ Email: se.solovyev@gmail.com
   ~ Site:  http://se.solovyev.org
   -->
-<Button a:id="@id/cpp_button_equals"
-	style="@style/CppKeyboardButton.Material.Light.Simple.Control"
-	xmlns:a="http://schemas.android.com/apk/res/android"
-	a:text="=" />
+<Button
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:id="@id/cpp_button_equals"
+    style="@style/CppKeyboardButton.Material.Light.Simple.Control"
+    a:text="=" />