i want to know what is the difference b/w the symbol Movie
clip and the MovieClip created by using Movieclip class.
b/c when i want to unload movie from the symbol Movieclip
created at designe time and it is on the stage , i have to
use function like this for example, if movieclip instance
name is "mc"
unloadMovie(target:MovieClip) : Void // function prototype
while if i create like this