List boxes look like one-line text fields, but feature a down arrow symbol at the end of the field. They feature a pre-defined set of values which are valid for that field. To select a value from the List box, do any of the following:
use the mouse to click on the down arrow symbol to display the list of values, then use the mouse or the up and down arrow keys to highlight a value;
use the up and down arrow keys to display each item in the list; or
press the key corresponding to the first letter of any item in the list.