         
         /**
          *  Returns the depth for the specified DisplayObject.
+         *
+         *  @param displayObject The object.
+         *
+         *  @return The depth of the object.
          * 
          *  @langversion 3.0
          *  @playerversion Flash 10

    /**
     *  A DisplayLayer class maintains an ordered list of DisplayObjects sorted on
     *  depth.
     *  Developers don't instantiate this class, but use the <code>overlay</code>
     *  property of <code>Group</code> and <code>DataGroup</code>.
     *
     *  @see spark.components.Group#overlay

        
        /**
         *  Returns the DisplayObject with the specified index. 
         *
         *  @param index The index of the object.
         *
         *  @return The object.
         * 
         *  @langversion 3.0
         *  @playerversion Flash 10
