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Printer Control Codes and Escape Sequences
This
section describes the
control
codes,
followed by the escapement
sequences, in ASCII decimal numeric order. The first line of each
command contains the command abbreviation and a descriptive
title.
If the command is an escapement
sequence
which requires parame-
te
rs,
the next line will identify the sequence of characters and param-
eters which are requi
r
ed for a complete
command.
Following this
line is a discussion of the
command,
how it
functions,
and the
purpose or meaning of
each
parameter.
Each command ends with an
example of
an
IBM Personal Computer BASIC program statement
which shows you how to use the
command.
Control
Codes
NUL
Null
BEL
As a
control,
this code point is ignored by the
printer.
This code point is also used to end the parameter list for the ESC
B (Set Vertical Tab Stops) and ESC D (Set Horizontal Tab
Stops)
commands.
LPRINT CHR$(0)
;
Bell
The BEL command sounds the printer
beeper.
LPRINT CHR$(7)
;
BS
Backspace
---
,.......
This command moves the print position left one print
column.
The
,-,._
leftward motion is bounded by the left margin.
LPRINT
CHR$(8)
;
4-20
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