  *  Dispatched by the <code>grid</code> skin part after a <code>gridMouseDown</code> event 
  *  if the mouse moves before the button is released.
  *
+ *  <p>To handle this event, assign an event handler to the <code>grid</code> skin part 
+ *  of the DataGrid control.</p>
+ *
  *  @eventType spark.events.GridEvent.GRID_MOUSE_DRAG
  * 
  *  @langversion 3.0

 *  Dispatched by the <code>grid</code> skin part when the caret position, size, or
 *  visibility has changed due to user interaction or being programmatically set.
 *
 *  @eventType spark.events.GridCaretEvent.CARET_CHANGE
 *  
 *  @langversion 3.0

/**
 *  Dispatched by the <code>grid</code> skin part after a <code>gridMouseDown</code> event 
 *  when the mouse button is released, even if the mouse is no longer within the grid.
 *
 *  <p>To handle this event, assign an event handler to the <code>grid</code> skin part 
 *  of the DataGrid control.</p>
 *
 *  @eventType spark.events.GridEvent.GRID_MOUSE_UP
 * 
