      *  A function used to compare selectedItems against items in the
      *  dataProvider.  If there is a match, the item in the dataProvider
      *  becomes part of the selection.
-   	 *  By default, or if selectedItemsCompareFunction is set to null
+     *  By default, or if selectedItemsCompareFunction is set to null
      *  the default comparision function is used which uses
      *  strict equality (===).  Note that earlier releases of
      *  Flex used simple equality (==) so there could be behavioral

    {
        // this code is nearly duplicating UIComponent.validateDisplayList();

    	validateMatrix();

        if (invalidateDisplayListFlag)
        {

     *  reservedItemRenderers map. Otherwise (or if no reserved renderer
     *  is found) it retrieves from the freeItemRenderers stack.
     *
     *  @param data The data to be presented by the item renderer.
     *  
     *  @langversion 3.0
     *  @playerversion Flash 9
