what do these android permissions mean and how to use them?

I came across these types of android permissions:

INTERNAL_SYSTEM_WINDOW
MANAGE_APP_TOKENS
REORDER_TASKS
SET_ACTIVITY_WATCHER

but 开发者_JS百科they are unfamiliar to me. Could somebody explain what do they permit? In what situations are they likely to be used?

Thanks

These are all internal system facilities, so not available to applications. Technically the symbols shouldn't be in the SDK documentation, but we missed @hide-ing them for 1.0. You can look at the platform source where they are used to see what they protect.

Permissions and their uses can be found here in the Android documentation: http://developer.android.com/reference/android/Manifest.permission.html