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

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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.

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