Epson PowerLite 4100 Operator's Manual page 253

Note: n/216 vertical line spacing may be used in graphic printing. n/216
in. line spacing is approximated using 1/144 in. steps. Maximum
local and cumulative error is - 1/216 in.
The operation of double-density graphics and quad density is the same as
single density. For more information, refer to the description of the Single-
Density Graphics command (ESC K).
Example
REM PRINT 2 SOLID BARS 150 DOT PATTERNS IN
REM LENGTH USING DOUBLE DENSITY GRAPHICS
FOR I = 1 TO 2
LPRINT CHR$(27);"L";CHR$(150);CHR$(0);
FOR J = 1 TO 150
LPRINT CHR$(255);
NEXT J
LPRINT
NEXT I
END
Operator's Guide 233