      *  Defines the layout of the <code>titleGroup</code> 
      *  and <code>titleDisplay</code> skin parts.
      * 
-     *  <p>If <code>titleContent</code> is null, <code>titleDisplay</code> 
-     *  is displayed in place of <code>titleGroup</code>. 
-     *  In this case, <code>titleDisplay</code> is positioned 
+     *  <p>If the <code>titleContent</code> property is null, 
+     *  the <code>titleDisplay</code> skin part is displayed  
+     *  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
-     *  <code>titleLayout</code>, if defined.</p>
+     *  <code>paddingLeft</code> and <code>paddingRight</code> properties 
+     *  of the layout class specified by the 
+     *  <code>titleLayout</code> property.</p>
      *
      *  @default HorizontalLayout
      *  @see #titleContent

/**
 *  @copy spark.components.supportClasses.GroupBase#style:accentColor
 * 
 *  @default #0099FF
 * 
 *  @langversion 3.0
 *  @playerversion Flash 10

[SkinState("titleContentWithActionAndNavigation")]

/**
 *  The ActionBar class defines a component that includes title, navigation, 
 *  and action content groups. 
 *  The ActionBar control provides a standard area for navigation and action controls. 
 *  It lets you define global controls that can be used from anywhere in the application, 
