Epson 1010 User Manual page 248

ESC ?
Format:
ASCII code:
Decimal:
Hexadecimal:
Comments:
Changes from one graphics mode to another. The variable s is a
character (K, L, Y or Z).
The variable m corresponds to the mode m in the ESC * command.
9-40 Command Summary
ESC ?
27 63
1B 3F
Reassign Graphics Mode
s m
s m
s m