Esc ? Reassigns Dot Graphics Mode. (Epson) - Compuprint MDP 30FB Programmer's Manual

k total number of data bytes, according to the following formula:
k = m x INT
d ... d During full graphics mode: graphics data.
1 k
During compressed mode: the first data byte is treated as a counter. Graphics
data bytes then alternate with a data counter byte as follows:
0 < (counter byte) < 127
Counter specifies the number of data bytes following according to this formula:
(counter byte) + 1 = (number of data bytes to follow)
or
(counter byte) = (number of data bytes to follow) -1
128 < (counter byte) < 255
Counter specifies the number of times to repeat the next byte of data according to
this formula:
256 - (counter byte) + 1 = (number of times to repeat next byte)
or
(counter byte) = 257 - (number of times to repeat next byte)
ESC ?
Reassigns dot graphics mode. (EPSON)
ASCII Code ESC ? n m
1B 3F n m
Hexadecimal Value
27 63 n m
Decimal Value
Reassigns one of the dots graphics mode (described in the command ESC *) to one of
the following commands: ESC K, ESC L, ESC Y and ESC Z. The parameter n specifies
a character (K, L, Y or Z) which is reassigned to specific mode.
m = 0,1,2,3,4,6,32,33,38,39,40,64,65,70,71,72,73
(n x 256) + n + 7
2 1
8
76