      *  skin part of the ActionBar control.
      *
      *  <p>The location and appearance of the <code>titleGroup</code> 
-     *  skin part is determined by the skin.
+     *  skin part is determined by the ActionBarSkin class.
      *  The default ActionBarSkin class defines the <code>titleGroup</code>
      *  to appear in the center of the ActionBar,
      *  using the space remaining between <code>navigationGroup</code> 

     *  in place of the <code>titleGroup</code> skin part. 
     *  The <code>titleDisplay</code> skin part is positioned 
     *  in the center of the ActionBar control
     *  by using the padding specified by the 
     *  <code>paddingLeft</code> and <code>paddingRight</code> properties 
     *  of the layout class specified by the 
     *  <code>titleLayout</code> property.</p>
     *
     *  @default HorizontalLayout
     *  @see #titleContent

     *  using the <code>actionGroup</code> skin part. 
     * 
     *  <p>The location and appearance of the <code>actionGroup</code> 
     *  skin part is determined by the ActionBarSkin class.
     *  The default ActionBarSkin class defines the <code>actionGroup</code>
     *  to appear to the right of the title display area of the ActionBar.</p>
     * 
     *  <p>Create a custom ActionBarSkin skin class to change the default location 
     *  and appearance of the <code>actionGroup</code> skin part.</p>
     *  
     *  @default null
     *
