      *  you must specify all four of these properties:
      *  <code>scaleXFrom</code>, <code>scaleYFrom</code>, 
      *  <code>scaleXTo</code>, and <code>scaleX</code>.</p>
+     *  
+     *  @langversion 3.0
+     *  @playerversion Flash 9
+     *  @playerversion AIR 1.1
+     *  @productversion Flex 3
      */
     public var scaleYTo:Number;
 

     *
     *  <p>The function returns a single Shape object
     *  that defines the mask.</p>   
     */
    public var createMaskFunction:Function;
    

     *  Constructor.
     *
     *  @param target The Object to animate with this effect.
     *  
     *  @langversion 3.0
     *  @playerversion Flash 9
     *  @playerversion AIR 1.1
     *  @productversion Flex 3
     */
    public function MaskEffect(target:Object = null)
    {
