a quick start of flex

gistfile1.as

package {
	import Math;

	import flash.display.MovieClip;
	import flash.display.Stage;
	import flash.display.Sprite;

	import flash.events.Event;
	import flash.events.EventDispatcher;

	import flash.filters.BitmapFilter;
	import flash.filters.BitmapFilterQuality;
	import flash.filters.BevelFilter;
	import flash.filters.DropShadowFilter;

	[SWF(width=200,height=200,backgroundColor=0xffffff)]
	public class as3 extends flash.display.MovieClip
	{
		public function as3()
		{
			trace('as3');
			stage.frameRate = 20;
		}
	}
}