The document launch mode style requested by the activity. From the NoType:android/R$attr;Href=../../../../reference/android/R.attr.html#documentLaunchMode attribute, one of ActivityInfo.DOCUMENT_LAUNCH_NONE, ActivityInfo.DOCUMENT_LAUNCH_INTO_EXISTING, ActivityInfo.DOCUMENT_LAUNCH_ALWAYS.

Modes DOCUMENT_LAUNCH_ALWAYS and DOCUMENT_LAUNCH_INTO_EXISTING are equivalent to Android.Content.Intent.FLAG_ACTIVITY_NEW_DOCUMENT with and without Android.Content.Intent.FLAG_ACTIVITY_MULTIPLE_TASK respectively.

[Android Documentation]