             contentChanged = false;
             initializeChildrenArray();
             
-            maskChanged = true; //TODO (rfrishbe): need this maskChanged?
+            maskChanged = true; 
         }
     
     	// Need to initializeChildrenArray before calling super.commitProperties

        invalidateProperties();
    }
    
    /**
     *  Dictionary to keep track of mask elements.  Because mask elements can be applied 
     *  to GraphicElements, which may not be DisplayObjects, the Group needs to know this
     *  to map GraphicElements to DisplayObjects later on since masking takes place
     *  at the Flash Player level.
     */ 
    protected var maskElements:Dictionary;
    
    /**
     *  @private
     */
    override public function addMaskElement(mask:DisplayObject, target:IGraphicElement):void
    {
        if (!maskElements)
            maskElements = new Dictionary();
            
        maskElements[mask] = target;
        contentChanged = true;
        // TODO!! Remove this once GraphicElements use the LayoutManager. Currently the
        // callLater is necessary because addMaskElement gets called inside of commitProperties
        callLater(invalidateProperties); 
            
    }
    
    /**
     *  @private
     */
    override public function removeMaskElement(mask:DisplayObject, target:IGraphicElement):void
    {
        if (maskElements && mask in maskElements)
        {
            delete maskElements[mask];
            contentChanged = true;
             // TODO!! Remove this once GraphicElements use the LayoutManager. Currently the
            // callLater is necessary because removeMaskElement gets called inside of commitProperties
            callLater(invalidateProperties);
        }
    }
    
    //--------------------------------------------------------------------------
    //
    //  Properties: ScaleGrid

        
        assignDisplayObjects();
        needsDisplayObjectAssignment = false;
    }
    
    /**
