IBM 4400 - page 109

Super-Set Commands
109
Super-Set Commands
ASCII Code ESC |};
Hex Code 1B 7C 7D 3B
Dec Code 27 124 125 59
Purpose Control code sequence used to introduce the super-set
commands.
Comment Super-set commands affect the ASCII Emulation as a whole
regardless of the printer protocol currently active. The
commands are sent from the host in the data stream to the
printer, and provide the following capabilities:
• Selecta printer protocol
• Change the page orientation
• Define various font attributes, including typeface and
point size
• Select proportional fonts
SeeChapter 7, “Super-Set Programming,”for further information
on the super-set commands.
Underline
ASCII Code ESC – n
Hex Code 1B 2D n
Dec Code 27 45 n
Purpose Enables or disables automatic underlining of all characters.
where:
n =0 to disable automatic underlining (hex 00 or hex 30)
n =1 to enable automatic underlining (hex 01 or hex 31)
Comment When automatic underline is enabled, all characters, including
spaces, are underlined until disabled.
Example The following sample illustrates automatic underlining and
underlining reset.