3.9.7 To Navigate Drop-Down Lists
A drop-down list is a control that you use to
select one of several available items. The drop-down list contains a button
that you use to display the available items. 
Figure 3–6  Sample Drop-Down List

The following table lists the keyboard shortcuts that you can use to
navigate a drop-down list.
| 
 Keys  
 | 
 Function  
 | 
| 
 spacebar 
 | 
 This key performs one of the following functions:  
- 
If the drop-down list is not open, this key opens the drop-down
list. 
 
- 
If the drop-down list is open, this key accepts the current
selection and closes the list.  
 
 
 | 
| 
 up arrow 
 | 
 Select the previous list item.  
 | 
| 
 down arrow 
 | 
 Select the next list item.  
 | 
| 
 Esc 
 | 
 Close the list without changing
the selection.  
 |