      * 
      *  The implementation calls <code>getElementBoundsAboveScrollRect()</code> and
      *  <code>getElementBoundsBelowScrollRect()</code> to determine the bounds of
-     *  the elements.  Layout classes usually override those methods instead of
-     *  getVerticalScrollPositionDelta(). 
+     *  the elements. Layout classes usually override those methods instead of
+     *  the <code>getVerticalScrollPositionDelta()</code> method. 
      * 
      *  @see spark.core.NavigationUnit
      *  @see #getElementBoundsAboveScrollRect

     *  @playerversion AIR 2.0
     *  @productversion Flex 4.5
     */
	public function setEstimatedSize(estimatedWidth:Number = NaN, 
									 estimatedHeight:Number = NaN,
									 invalidateSize:Boolean = true):void
    {
        
    }   

     *  The implementation calls <code>getElementBoundsLeftOfScrollRect()</code> and
     *  <code>getElementBoundsRightOfScrollRect()</code> to determine the bounds of
     *  the elements.  Layout classes usually override those methods instead of
     *  the <code>getHorizontalScrollPositionDelta()</code> method. 
     * 
     *  @see spark.core.NavigationUnit
     *  @see #getElementBoundsLeftOfScrollRect
