IBM Personal Computer AT Manual To Operations page 92

DC 4 Device Control 4 (Double Width Off)
Stops printing in the Double Width print
mode.
LPRINT CHR$(20);
ESC Escape
Lets the printer know that the next data
sent i~ a printer command.
LPRINT CHR$(27);
ESC A
Escape A (Set Variable Line Feed)
Format: ESC A;n;.
Escape A sets the line feed to n x 0.35 mm
0/72 in.). Any increment between 0.35
and 29.99 mm 0/72 and 85/72 in.) may
be used. The example below tells the
printer to set line feeding to 8.47 mm
(24/72 in.). ESC 2 must be sent to the
printer before line feeding will change. For
example, ESC A, 24 (text) ESC 2 (text).
The text following ESC A, 24 will space at
the previously set line-feed increments. The
text following ESC 2 will be printed with
~
new line feed increments of 8.47 mm
(24/72 in.).
LPRINT CHR$(27);CHR$(65);CHR$(24);
CHR$(27);CHR$(50);
1-32 Graphics Printer