Epson PowerLite 4100 Operator's Manual page 269

Example
REM SET ENLARGED PITCH
LPRINT CHR$(27);"W";CHR$(1);"This is large."
REM CANCEL ENLARGED PITCH
LPRINT CHR$(27);"W";CHR$(0);"This is small."
ESC :
ASCII: ESC :
Control: [ :
CTRL
Decimal: 27 58
Hexadecimal: 1B 3A
Sets character pitch to 12 pitch. If currently printing in Enlarged Pitch,
sets to 6 pitch. Control code DC2 resets to 10 pitch.
Current Pitch
18.2
17.14
16.67
15.0
10.0
9.1
8.57
8.33
7.5
5.0
After ESC
12.0
12.0
12.0
12.0
12.0
6.0
6.0
6.0
6.0
6.0
Operator's Guide 249
Set 12 Pitch