Does removeChild removes ALL content?

Hello,

I was wondering if you remove a child with “removeChild” if it removes everything what was in the movieClip.

I doesn’t remove listeners automatically (right?).
But does it remove bitmapData (from the memory) for example? Because I don’t want to remove all bitmaps with the Dispose.

Does it help if I initialize the garbage collector: “System.gc();”.
It does help with removing listeners automatically, but what about other things?

On the adobe website about the GC.
But it says:
*For the Flash Player debugger version and AIR applications only.
*But does this mean that if I play the SWF outside of Flash this GC doesn’t do anything?

Thanks in advance,
Harm