American Dynamics ADTT16 Operator's Manual page 20

Press this button to select the
top line of the LCD (in this
example "Calibration").
Tip: You may also use the A or B buttons on the Touch Tracker to select
menu items on the LCD. Use A to select the top item on the LCD; use B to
select the bottom item on the LCD.
The C and D buttons on the Touch Tracker may be used to scroll through the
LCD menu. Use C to scroll to the previous menu item; use D to scroll to the
next menu item.
1-10
Press this button to select the
bottom line of the LCD (in this
example "Define Sequence").
Operator's Manual