[AS3] duplicateMovieClip function

Im currently creating a map editor for a game Im creating which is going very well :)

What would help though is a function which works in the same way as duplicateMovieClip. I can copy single Sprites fine, but if I have for example created a new Sprite which contains two different Sprites, I cant make a copy of that new Sprite. Has any one found on their blog reading travels a function/class which truly emulates duplicateMovieClip?

:(

Um. Just a guess because I haven't even typed a line of AS3 yet.
Couldn't you just copy the var you defined as the movieclip and then add that as a child?

May be completely wrong.

I dont know real way to duplicate Movie Clips. You could create copy of variables, methods etc using byteArray, the display graphics could be copied using bitmapData and draw, but I am not sure how to copy the timeline in movie clip.