Value: 1
Flag for FragmentManager.PopBackStack(string, Android.App.PopBackStackFlags) and FragmentManager.PopBackStack(int, Android.App.PopBackStackFlags): If set, and the name or ID of a back stack entry has been supplied, then all matching entries will be consumed until one that doesn't match is found or the bottom of the stack is reached. Otherwise, all entries up to but not including that entry will be removed.