      *  @return The change to the vertical scroll position.
      * 
      *  @see spark.core.NavigationUnit
-     *  @see #getElementBoundsAboveScrollRect
-     *  @see #getElementBoundsBelowScrollRect
-     *  @see #getVerticalScrollPositionDelta
+     *  @see #getElementBoundsAboveScrollRect()
+     *  @see #getElementBoundsBelowScrollRect()
+     *  @see #getVerticalScrollPositionDelta()
      *  
      *  @langversion 3.0
      *  @playerversion Flash 10

    *  @see #clipAndEnableScrolling
    *  @see #verticalScrollPosition
    *  @see #horizontalScrollPosition
    *  @see #udpdateScrollRect()
    *  
    *  @langversion 3.0
    *  @playerversion Flash 10

     *  <code>maintainProjectionCenter</code> property here.</p> 
     *
     *  @default null
     *  @see #updateDisplayList()
     *  @see #measure()
     *  
     *  @langversion 3.0
     *  @playerversion Flash 10
