      *
      *  @param playheadTime The position, in milliseconds, between 0
      *  and the value of the <code>duration</code> property.
+     *  
+     *  @langversion 3.0
+     *  @playerversion Flash 10
+     *  @playerversion AIR 1.5
+     *  @productversion Flex 4
      */
     override public function seek(playheadTime:Number):void
     {

    /**
     * Handles update events from the animation.
     * If you override this method, ensure that you call the super method.
     */
    protected function updateHandler(event:AnimationEvent):void
    {

     * is calculated from the other value and a supplied delta value.
     * 
     * @return Boolean whether this call changed any values in the list
     *  
     *  @langversion 3.0
     *  @playerversion Flash 10
     *  @playerversion AIR 1.5
     *  @productversion Flex 4
     */
    private function finalizeValues():Boolean
    {
