The buttons at the bottom of the 
               Add to Combined Data Element window are:
               
            
            
            
               
               
               - Refresh
                  
               
- Refreshes the information. If another user defines a combined data element from a different executable in the same database,
                  you can see the changes.
                  
               
- Apply
                  
               
- Confirms the changes made to the combined data element. A newly created combined data element appears as the last field in
                  the 
                  List of Data Elements grid. 
                  
               
- Delete
                  
               
- Deletes all information for the selected combined data element.
                  
               
- Cancel
                  
               
- Cancels any changes applied to the selected data element. Any actions confirmed with the 
                  Apply button cannot be restored with 
                  Cancel but must be entered and confirmed again.
                  
               
- Drag-and-drop operations
                  
               
- Data elements listed in the 
                  List of Data Elements grid can be added to the 
                  List of Data Elements grid by using a drag-and-drop operation.