IBM TM7 - Manual (Page 151)

n=01 Set double-wide mode
Default:
n = 00
Set or Cancel Double-High Mode
RS-232 Syntax:
ESC h n or X'1B;68;n'
where:
n=00 Cancel double-high mode
n=01 Set double-high mode
Default:
n = 00
Purpose:
For better print quality with double-high characters in the document station.
Remarks:
See “Set or Cancel Unidirectional Printing” on page 135.
Set or Cancel Underline Mode
RS-232 Syntax:
ESC − n or X'1B;2D;n'
where:
n=00 Cancel underline mode
n=01 Set underline mode
Default:
n = 00
Remarks:
This is valid in the customer receipt station only.
Set or Cancel Overline Mode
RS-232 Syntax:
ESC x‘5F’ n or X'1B;5F;n'
where:
n=00 Cancel overline mode
n=01 Set overline mode
Default:
n = 00
Remarks:
This is valid in the customer receipt station only.
Set or Cancel Invert Mode
RS-232 Syntax:
ESC H n or X'1B;48;n'
where:
updated March 18, 2002
Appendix C. RS-232 Programming Information 127