  *  Rather than allow the child to extend past the boundaries of the parent container, 
  *  the Scroller specifies to clip the child to the boundaries and display scroll bars.</p>
  *
- *  <p>For Spark containers that do not implement the IViewport interface, 
- *  you can still use scroll bars. 
- *  To add scroll bars, create a custom skin for the container that 
- *  includes the Scroller control. </p>
+ *  <p>Not all Spark containers implement the IViewPort interface. 
+ *  Therefore, those containers, such as the Border and SkinnableContainer containers, 
+ *  cannot be used as the direct child of the Scroller component.
+ *  However, all Spark containers can have a Scroller component as a child component. 
+ *  For example, to use scroll bars on a child of the Spark Border container, 
+ *  wrap the child in a Scroller component. </p>
+ *
+ *  <p>To make the entire Border container scrollable, wrap it in a Group container. 
+ *  Then, make the Group container the child of the Scroller component,
+ *  For skinnable Spark containers that do not implement the IViewport interface, 
+ *  you can also create a custom skin for the container that 
+ *  includes the Scroller component. </p>
  * 
  *  <p>The IViewport interface define a viewport for the components that implement it.
  *  A viewport is a rectangular subset of the area of a container that you want to display, 
  *  rather than displaying the entire container.
- *  The scrollbars control the viewport's <code>horizontalScrollPosition</code> and
+ *  The scroll bars control the viewport's <code>horizontalScrollPosition</code> and
  *  <code>verticalScrollPosition</code> properties.
- *  Scrollbars make it possible to view the area defined by the viewport's 
+ *  scroll bars make it possible to view the area defined by the viewport's 
  *  <code>contentWidth</code> and <code>contentHeight</code> properties.</p>
  *
  *  <p>You can combine scroll bars with explicit settings for the container's viewport. 

    [Bindable]    

    /**
     *  A skin part that defines the horizontal scrollbar.
     * 
     *  This property should be considered read-only. It is only
     *  set by the Scroller's skin.

     * 
     *  <p>
     *  The viewport is added to the Scroller component's skin, 
     *  which lays out both the viewport and scroll bars.
     * 
     *  When the <code>viewport</code> property is set, the viewport's 
     *  <code>clipAndEnableScrolling</code> property is 
