The first row of the Android Manifest file <AndroidManifest.xml> (located in the app/manifests directory) represents the xml file declaration. The explanation of this first row can be hound here.
<?xml version="1.0" encoding="utf-8"?><manifest> package="string" android:sharedUserId="string" android:sharedUserLabel="string resource" android:versionCode="integer" android:versionName="string" android:installLocation=["auto" | "internalOnly" | "preferExternal"] > <compatible-screens /> <instrumentation /> <permission /> <permission-group /> <permission-tree /> <supports-gl-texture /> <supports-screens /> <uses-configuration /> <uses-feature /> <uses-permission /> <uses-permission-sdk-23 /> <uses-sdk /> <application> android:allowTaskReparenting=["true" | "false"] android:allowBackup=["true" | "false"] android:backupAgent="string" android:backupInForeground=["true" | "false"] android:banner="drawable resource" android:debuggable=["true" | "false"] android:description="string resource" android:directBootAware=["true" | "false"] android:enabled=["true" | "false"] android:extractNativeLibs=["true" | "false"] android:fullBackupContent="string" android:fullBackupOnly=["true" | "false"] android:hasCode=["true" | "false"] android:hardwareAccelerated=["true" | "false"] android:icon="drawable resource" android:isGame=["true" | "false"] android:killAfterRestore=["true" | "false"] android:largeHeap=["true" | "false"] android:label="string resource" android:logo="drawable resource" android:manageSpaceActivity="string" android:name="string" android:networkSecurityConfig="xml resource" android:permission="string" android:persistent=["true" | "false"] android:process="string" android:restoreAnyVersion=["true" | "false"] android:requiredAccountType="string" android:resizeableActivity=["true" | "false"] android:restrictedAccountType="string" android:supportsRtl=["true" | "false"] android:taskAffinity="string" android:testOnly=["true" | "false"] android:theme="resource or theme" android:uiOptions=["none" | "splitActionBarWhenNarrow"] android:usesCleartextTraffic=["true" | "false"] android:vmSafeMode=["true" | "false"] > <activity android:allowEmbedded=["true" | "false"] android:allowTaskReparenting=["true" | "false"] android:alwaysRetainTaskState=["true" | "false"] android:autoRemoveFromRecents=["true" | "false"] android:banner="drawable resource" android:clearTaskOnLaunch=["true" | "false"] android:configChanges=["mcc", "mnc", "locale", "touchscreen", "keyboard", "keyboardHidden", "navigation", "screenLayout", "fontScale", "uiMode", "orientation", "screenSize", "smallestScreenSize"] android:directBootAware=["true" | "false"] android:documentLaunchMode=["intoExisting" | "always" | "none" | "never"] android:enabled=["true" | "false"] android:excludeFromRecents=["true" | "false"] android:exported=["true" | "false"] android:finishOnTaskLaunch=["true" | "false"] android:hardwareAccelerated=["true" | "false"] android:icon="drawable resource" android:label="string resource" android:launchMode=["standard" | "singleTop" | "singleTask" | "singleInstance"] android:maxRecents="integer" android:multiprocess=["true" | "false"] android:name="string" android:noHistory=["true" | "false"] android:parentActivityName="string" android:persistableMode=["persistRootOnly" | "persistAcrossReboots" | "persistNever"] android:permission="string" android:process="string" android:relinquishTaskIdentity=["true" | "false"] android:resizeableActivity=["true" | "false"] android:screenOrientation=["unspecified" | "behind" | "landscape" | "portrait" | "reverseLandscape" | "reversePortrait" | "sensorLandscape" | "sensorPortrait" | "userLandscape" | "userPortrait" | "sensor" | "fullSensor" | "nosensor" | "user" | "fullUser" | "locked"] android:showForAllUsers=["true" | "false"] android:stateNotNeeded=["true" | "false"] android:supportsPictureInPicture=["true" | "false"] android:taskAffinity="string" android:theme="resource or theme" android:uiOptions=["none" | "splitActionBarWhenNarrow"] android:windowSoftInputMode=["stateUnspecified", "stateUnchanged", "stateHidden", "stateAlwaysHidden", "stateVisible", "stateAlwaysVisible", "adjustUnspecified", "adjustResize", "adjustPan"] > <intent-filter> android:icon="drawable resource" android:label="string resource" android:priority="integer" > <action android:name="string" /> <category android:name="string"/> <data android:scheme="string" android:host="string" android:port="string" android:path="string" android:pathPattern="string" android:pathPrefix="string" android:mimeType="string" /> </intent-filter> <meta-data android:name="string" android:resource="resource specification" android:value="string" /> </activity> <activity-alias> <intent-filter> . . . </intent-filter> <meta-data /> </activity-alias> <service> <intent-filter> . . . </intent-filter> <meta-data/> </service> <receiver> <intent-filter> . . . </intent-filter> <meta-data /> </receiver> <provider> <grant-uri-permission /> <meta-data /> <path-permission /> </provider> <uses-library /> </application></manifest><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.gcarabel.modifymanifest" android:sharedUserId="string" android:sharedUserLabel="string resource" android:versionCode="1" android:versionName="1.16" android:installLocation=["auto" | "internalOnly" | "preferExternal"] >android:sharedUserId="string"android:sharedUserLabel="string resource" android:installLocation=["auto" | "internalOnly" | "preferExternal"]