toll free bridging

FROM : Ken Victor
DATE : Tue Dec 14 20:39:46 2004

i understand that since, eg, NSString and CFString are toll free
bridged that i can use one or the other as needed (with appropriate
casting) in cocoa and/or system calls. does this also apply to
releasing the objects as well? ie, can i:
CFRelease( an NSString)
or
[<a CFString> release]

thanx,
ken