Epson LX-810 User Manual page 271

Commands A^rranged by Topic
ESC ! Master Select
Format:
ASCII code: ESC ! n
Decimal: 27 33 n
Hexadecimal: IB 21 n
Comments:
Select any valid combination of the following modes: 10 cpi, 12
cpi, condensed, emphasized, double-strike, double-wide, italic,
and underlined. For details on how to set n, see the section on
selecting type styles with Master Select in Chapter 4.
Print size and character width
ESC P Select 10 cpi
Format:
ASCII code: ESC P
Decimal: 27 80
Hexadecimal: IB 50
Comments:
Selects 10 cpi (10 characters per inch).This command is normally
used to cancel 12 cpi.
ESC M Select 12 cpi
Format:
ASCII code: ESC M
^ Decimal: 27 77
- Hexadecimal: IB 4D
Comments:
Select 12 cpi (12 characters per inch).
^ Command Summary 9-23