A Library Manifest is the main Unity manifest and contains information about the Unity Player and its activity. Unity uses a default Library Manifest during the build process to generate the final Android Manifest for the application. You can override this with your own manifest file to have more control over the Android Manifest that Unity generates. For more information, see [Overriding an Android Manifest](overriding-android-manifest #creating-a-template-android-manifest-file).
A Library Manifest declares: