ActionScript 3.0 demo: create a falling snow in flash CS6

Below is the example to create falling snow in Flash CS6 using ActionScript 3.0.
1) Open Adobe Flash CS6 File->New->ActionScript 3.0
2) Stage width 640, height 400, File-> import to stage with background image (640*400) in layer 1.
Create static text, "SUM" and author name.  input web address under the author name link property.
3) Create layer 2. Using  oval tool to create   a circle with stroke color and fill color white..
4) Using  select tool, to convert the white circle to MovieClip with name snowflake and select "export to actionscript" with class name snowflake.
5) Press F9 to input the following actionscritpt

addEventListener (Event.ENTER_FRAME,snow);
function snow (event:Event):void {
   
    var scale:Number=Math.random()*.6;
    var _sf:snowflake=new snowflake();
    _sf.x=Math.random()*640;
    _sf.scaleX=scale;
    _sf.scaleY=scale;
    var speed:Number=Math.random()*2;
    var RA:Array=new Array(-1,1);
    var lf:int=RA[Math.round(Math.random())];

    stage.addChild (_sf);
    _sf.addEventListener (Event.ENTER_FRAME,snowfall);
   

    function snowfall (event:Event):void {
       
        _sf.y+=speed;
        _sf.rotation+=Math.random()*20;
        _sf.x+=(Math.random()*2)*lf;
    }
}
6) Export or test flash, done.

flash output

video: ActionScript 3.0 demo: create a falling snow in flash CS6