     [Bindable]
     
     /**
-     *  @inheritDoc
+     *  @copy mx.core.IViewport#verticalScrollPosition
      */
     public function get verticalScrollPosition():Number 
     {

    }
    
    /**
     *  @inheritDoc
     */
    public function verticalScrollPositionDelta(unit:uint):Number
    {

    //----------------------------------

    /**
     *  @copy mx.core.IViewport#horizontalScrollPositionDelta
     */
    public function horizontalScrollPositionDelta(unit:uint):Number
    {
