     //----------------------------------
 
     /**
-     *  @copy mx.core.IViewport#horizontalScrollPositionDelta
+     *  @copy spark.core.IViewport#horizontalScrollPositionDelta
      *  
      *  @langversion 3.0
      *  @playerversion Flash 10

     *  This object is responsible for the measurement and layout of 
     *  the visual elements in the container.
     * 
     *  @default mx.layout.BasicLayout
     *
     *  @see LayoutBase
     *  

 *  A group component does not control the layout of the visual items that it contains. 
 *  Instead, the layout is handled by a separate layout component.
 *
 *  @see spark.layout.supportClasses.LayoutBase
 *  @see spark.components.ResizeMode
 *  
 *  @langversion 3.0
 *  @playerversion Flash 10
