     //  z
     //----------------------------------
 
+    /**
+     *  @private
+     */
     override public function get z():Number
     {
         return (_layoutFeatures == null) ? super.z : _layoutFeatures.layoutZ;

    }

    /**
     *  Similarly to the layoutMatrix3D property, sets the layout Matrix3D, but
     *  doesn't trigger a layout pass.
     *
     *  @langversion 3.0
     *  @playerversion Flash 10

    //----------------------------------

    /**
     *  @copy mx.core.IVisualElement#postLayoutTransformOffsets
     *
     *  @langversion 3.0
     *  @playerversion Flash 9
