  *  <p>The information displayed for each item consists of its name
  *  (with optional generic icon), type, size, creation date,
  *  and modification date.
- *  To do this, FileSystemDataGrid automatically creates five instances
- *  of DataGridColumn -- <code>nameColumn</code>, <code>typeColumn</code>,
+ *  To do this, FileSystemDataGrid automatically creates five columns
+ *  (DataGridColumn instances) -- <code>nameColumn</code>, <code>typeColumn</code>,
  *  <code>sizeColumn</code>, <code>creationDateColumn</code>,
  *  and <code>modificationDateColumn</code> -- and sets
  *  the <code>columns</code> property to an array of these five instances.

     *      itemClick="fileSystemViewer.navigateForward(event.index);"/&gt;</pre>
     *
     *  @default false
     */
    public function get canNavigateForward():Boolean
    {

     *  and <code>forwardHistory</code> properties.
     *  They have new values as soon as this method returns.</p>
     *
     *  <p>The following example shows how to use this method
     *  along with the FileSystemHistoryButton control to create a back button:</p>
     *
     *  <pre>
