Compuprint MDP 30FB Programmer's Manual page 17

Bottom margin = ((b
Where b is equal to:
2
(bottom margin)
INIT
Where b is equal to:
1
(bottom margin)
MOD
Send this command before paper is loaded or when paper is at the top-of-form position.
Otherwise the current print position becomes the top-margin position. Measure both
top and bottom margins from the top edge of the page. The baseline for printing
characters on the first line is 20/180 inch below the top-margin position.
This command cancels any previous top and bottom-margin settings.
x 256) + b ) x (defined unit)
2 1
1
( )
x
defined unit
256
1
( )
x
defined unit
256
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