The simplest type of command consists of a single character to be sent to the printer. For instance, to print in condensed mode the code format is:
ASCII code: SI
Decimal: 15
Hexadecimal: 0F
This code can be sent from a program by sending the code 15 directly.
More complex commands consist of two or more character codes. For example, to print in
ASCII code: ESC W n
Decimal: 27 87 n
Hexadecimal: 1B 57 n
In this case n can be either 1 or 0, to begin or end
LPRINT CHR$(27);CHR$(87);CHR$(l)
LPRINT CHR$(27);“W”;CHR$(l)
For the following commands that use only 0 or 1 for the variable, either the decimal or hexadecimal values 1 and 0 or the ASCII characters 1 and 0 can be used:
ESC U, ESC x, ESC p, ESC W, ESC S,
For example, in BASIC you can turn on proportional spacing with either of these statements:
LPRINT CHR$(27);“p”;CHR$(1)
LPRINT CHR$(27);“p”;“1”
C o m m a n d S u m m a r y 8 - 3