Tally Genicom T5023+ - Manual (Page 150)

Definition of characters Character set commands
140 T5023/5023+ - Programming Guide
The number of the totals to be calculated (data bytes) depends on the size of the
dot grid. For example, with a 24 by 29 dot grid, three data bytes per column must
be calculated, i. e. altogether 3 * 29 = 87 data bytes.
Example: