IBM Personal Computer AT Manual To Operations page 224

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ESCY
The margins are converted to inches based
on the current character-spacing setting.
The power-on default is set with DIP
Switch 5.
Note: Both nl and n2 must be included
in the command or the results will be
~
unpredictable.
LPRINT CHR$(27);CHR$(88);CHR$(nl);
CHR$(n2);
2216 Bit-Image Graphics
Format: ESC Y;nl;n2;vl;v2; ... V22l6;
Sets dot spacing to 168 by 84 dots per inch
in 1: 1 aspect ratio, to 140 by 84 dots per
inch in 5:6 aspect ratio (see "ESC n (Set
Aspect Ratio)") and prints at normal
printing speed. ESC Y graphics cannot
print dots in consecutive horizontal dot
positions.
If
consecutive dot positions are
specified, the printer will not print the
second dot. nb n2, Vb and V2, through V22l6
represent the same values as in 1108
Bit-Image Graphics (ESC K). Refer to the
description of ESC K for a complete
description of these values. The number of
bit-image data-bytes cannot exceed 2216
(the total number of dot positions in a 13.2
inch line).
LPRINT CHR$(27);CHR$(89);CHR$(nl);
CHR$(n2);CHR$(Vl);CHR$(V2); ...
CHR$(V2216);
1-114 Color Printer

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