diff --git a/calculatorpp/AndroidManifest.xml b/calculatorpp/AndroidManifest.xml
index d4c1b468..549a7fa4 100644
--- a/calculatorpp/AndroidManifest.xml
+++ b/calculatorpp/AndroidManifest.xml
@@ -1,71 +1,92 @@
-<?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:installLocation="auto" android:versionCode="81" android:versionName="1.3.1" package="org.solovyev.android.calculator">
-
-	<uses-permission android:name="android.permission.VIBRATE"/>
-	<uses-permission android:name="android.permission.INTERNET"/>
-	<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
-	<uses-permission android:name="com.android.vending.BILLING"/>
-
-	<uses-sdk android:minSdkVersion="4" android:targetSdkVersion="8"/>
-
-	<application android:debuggable="true" android:hardwareAccelerated="false" android:icon="@drawable/icon" android:label="@string/c_app_name" android:name=".CalculatorApplication">
-
-		<activity android:label="@string/c_app_name" android:name=".CalculatorActivity" android:windowSoftInputMode="adjustPan">
-
-			<intent-filter>
-				<action android:name="android.intent.action.MAIN"/>
-				<category android:name="android.intent.category.LAUNCHER"/>
-			</intent-filter>
-
-		</activity>
-        
-        <service android:name=".CalculationServiceImpl"/>
-
-		<!--NOTE: a:configChanges="orientation|keyboardHidden" is needed to correct work of dialog windows (not to close them on orientation change) -->
-		<activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_app_settings" android:name=".CalculatorPreferencesActivity"/>
-
-		<activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_app_history" android:name=".history.CalculatorHistoryTabActivity"/>
-
-	   	<activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_history" android:name=".history.HistoryActivityTab"/>
-
-		<activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_saved_history" android:name=".history.SavedHistoryActivityTab"/>
-
-		<activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_about" android:name=".about.CalculatorAboutTabActivity"/>
-
-		<activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_about" android:name=".about.CalculatorAboutActivity"/>
-
-		<activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_about" android:name=".about.CalculatorReleaseNotesActivity"/>
-
-		<activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_help" android:name=".help.CalculatorHelpTabActivity"/>
-
-		<activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_help" android:name=".help.HelpFaqActivity"/>
-
-		<activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_help" android:name=".help.HelpHintsActivity"/>
-
-		<activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_help" android:name=".help.HelpScreensActivity"/>
-
-        <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_functions" android:name=".math.edit.CalculatorFunctionsTabActivity"/>
-
-		<activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_functions" android:name=".math.edit.CalculatorFunctionsActivity"/>
-
-		<activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_operators" android:name=".math.edit.CalculatorOperatorsActivity"/>
-
-        <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_vars_and_constants" android:name=".math.edit.CalculatorVarsTabActivity"/>
-
-		<activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_vars_and_constants" android:name=".math.edit.CalculatorVarsActivity"/>
-
-		<activity android:label="@string/c_plot_graph" android:name=".plot.CalculatorPlotActivity"/>
-
-		<activity android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize" android:name="com.google.ads.AdActivity"/>
-
-		<service android:name="net.robotmedia.billing.BillingService"/>
-		<receiver android:name="net.robotmedia.billing.BillingReceiver">
-			<intent-filter>
-				<action android:name="com.android.vending.billing.IN_APP_NOTIFY"/>
-				<action android:name="com.android.vending.billing.RESPONSE_CODE"/>
-				<action android:name="com.android.vending.billing.PURCHASE_STATE_CHANGED"/>
-			</intent-filter>
-		</receiver>
-
-	</application>
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:installLocation="auto"
+          android:versionCode="81" android:versionName="1.3.1" package="org.solovyev.android.calculator">
+
+    <uses-permission android:name="android.permission.VIBRATE"/>
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
+    <uses-permission android:name="com.android.vending.BILLING"/>
+
+    <uses-sdk android:minSdkVersion="4" android:targetSdkVersion="8"/>
+
+    <application android:debuggable="true" android:hardwareAccelerated="false" android:icon="@drawable/icon"
+                 android:label="@string/c_app_name" android:name=".CalculatorApplication">
+
+        <activity android:label="@string/c_app_name" android:name=".CalculatorActivity"
+                  android:windowSoftInputMode="adjustPan">
+
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+
+        </activity>
+
+        <service android:name=".CalculationServiceImpl"/>
+
+        <!--NOTE: a:configChanges="orientation|keyboardHidden" is needed to correct work of dialog windows (not to close them on orientation change) -->
+        <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_app_settings"
+                  android:name=".CalculatorPreferencesActivity"/>
+
+        <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_app_history"
+                  android:name=".history.CalculatorHistoryTabActivity"/>
+
+        <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_history"
+                  android:name=".history.HistoryActivityTab"/>
+
+        <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_saved_history"
+                  android:name=".history.SavedHistoryActivityTab"/>
+
+        <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_about"
+                  android:name=".about.CalculatorAboutTabActivity"/>
+
+        <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_about"
+                  android:name=".about.CalculatorAboutActivity"/>
+
+        <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_about"
+                  android:name=".about.CalculatorReleaseNotesActivity"/>
+
+        <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_help"
+                  android:name=".help.CalculatorHelpTabActivity"/>
+
+        <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_help"
+                  android:name=".help.HelpFaqActivity"/>
+
+        <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_help"
+                  android:name=".help.HelpHintsActivity"/>
+
+        <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_help"
+                  android:name=".help.HelpScreensActivity"/>
+
+        <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_functions"
+                  android:name=".math.edit.CalculatorFunctionsTabActivity"/>
+
+        <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_functions"
+                  android:name=".math.edit.CalculatorFunctionsActivity"/>
+
+        <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_operators"
+                  android:name=".math.edit.CalculatorOperatorsActivity"/>
+
+        <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_vars_and_constants"
+                  android:name=".math.edit.CalculatorVarsTabActivity"/>
+
+        <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_vars_and_constants"
+                  android:name=".math.edit.CalculatorVarsActivity"/>
+
+        <activity android:label="@string/c_plot_graph" android:name=".plot.CalculatorPlotActivity"/>
+
+        <activity
+                android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize"
+                android:name="com.google.ads.AdActivity"/>
+
+        <service android:name="net.robotmedia.billing.BillingService"/>
+        <receiver android:name="net.robotmedia.billing.BillingReceiver">
+            <intent-filter>
+                <action android:name="com.android.vending.billing.IN_APP_NOTIFY"/>
+                <action android:name="com.android.vending.billing.RESPONSE_CODE"/>
+                <action android:name="com.android.vending.billing.PURCHASE_STATE_CHANGED"/>
+            </intent-filter>
+        </receiver>
+
+    </application>
 </manifest>
\ No newline at end of file