Dialogue M2A1 User Manual page 31

(1) Main Menu
Keyboard Operation
Selects next higher value.
Display General Help.
Moves the cursor between
the fields.
(2) Setup Options (3) Item Specific Help
Use these left & right arrow keys to select menus on menu bar.
Use these up & down arrow keys to select fields in current menu.
(4) Keyboard Operation Guide
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Select next lower value.
Exits Setup or returns to
previous menu when in
sub-menus.
Enters sub-menus.