     [Inspectable(category="General")]
 
     /**
-     *  All layout elements will have at least this much space
-     *  above them. 
+     *  The minimum number of pixels between the container's top edge and
+     *  the top of all the container's layout elements. 
      * 
      *  @default 0
      *  

    [Inspectable(category="General")]

    /**
     *  The measured size of this layout will be big enough to display 
     *  the first <code>requestedColumnCount</code> layout elements. 
     * 
     *  If <code>requestedColumnCount</code> is -1, then the measured

    }    
    
    /**
     *  Returns 1.0 if the specified index is completely in view, 0.0 if
     *  it's not, and a value in between if the index is partially 
     *  within the view.
     * 
     *  An index is "in view" if the corresponding non-null layout element is 
     *  within the horizontal limits of the layout target's scrollRect
     *  and included in the layout.
     *  
     *  If the specified index is partially within the view, the 
     *  returned value is the percentage of the corresponding
     *  layout element that's visible.
