Deleting a drill
           Note:  The current filter type and available data items are displayed.
          
          To delete a drill:
- Highlight the data item for the drill to be deleted in the Data Item List.
 - From the menu select . The Delete Drill Associations for Data Item nnn dialog box is displayed, where nnn represents the data item, showing the list of current drills for the selection.
 - Highlight the drill to be deleted.
 - Click . A warning message will be displayed asking you to confirm deletion.