Set and Reset Codes
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Set and Reset Codes
Set and reset are another way of saying turn on and turn off, select and
deselect, or enable and disable.
Some printer features are set and reset with an escape sequence an d the
numbers 1 or 0. In such cases you can represent 1 and 0 as hexadecimal
codes 01 and 00, or as the ASCII codes for the numerals 1 and 0
(hexadecimal 31 and 30).
NUL Code
NUL (hex 00) is ignored by the printer and can be used as a fill character;
however, it can not be used to add blank spaces since it is not a spa ce
character. NUL can also be used as a parameter terminator for the Set
Horizontal Tabs (page 175) or Set Vertical Tabs multibyte control code (page
195).
NOTE: Hex 80 in the 0437 PC Character Set and Hex 7F in the 0850 PC
Character Set are treated as a NUL; however, these two controls can
not be used as parameter terminators.