Epson Apex-80 - Manual (Page 73)

For the following commands that use only 0 or 1 for the variable,
either the ASCII cocks 1 and 0 or the characters 1 and 0 can be used:
ESC
S
, ESC U, ESC
X
, ESC W, ESC S, ESC- , and
ESC %
For example, in BASIC you can turn on double-wide with either of
these statements:
LPRINT CHR$(27);"W";CHR$(1)
LPRINT CHR$(27);"W";"1"
The simplest type of command consists of a single character to be
sent to the printer. For instance, to print in condensed mode the code
format is:
ASCII code: S I
Decimal: 15
Hexadecimal: OF
More complex commands consist of two or more character codes.
For example, to print in elite mode the code format is the following:
ASCII code: ESC M n
Decimal: 27 77
n
Hexadecimal: 1B 4D
n
In this case n can be either 1 or 0, to begin or end elite printing. You
can use either of the following commands to turn ON elite print from
BASIC:
LPRINT CHR$(27);CHR$(77);CHR$(1)
LPRINT CHR$(27);"M";CHR$(l)
A-2 Command Summary