HP 2100 TN - Manual (Page 169)

EN Appendix D Printer Commands 157
D
Printer
Commands
Overview
Most software applications do not require you to enter printer
commands. See your computer and software documentation to find
the method for entering printer commands, if needed.
PCL
PCL printer commands tell the printer which tasks to perform or which
fonts to use. This appendix provides a quick reference for users who
are already familiar with PCL command structure.
The PCL 5e printer commands are backward-compatible with
previous versions of PCL.
The PCL 6 printer commands take full advantage of the printer’s
features.
HP-GL/2
The printer has the ability to print vector graphics using the HP-GL/2
graphics language. Printing in the HP-GL/2 language requires that
the printer leave PCL language and enter HP-GL/2 mode, which can
be done by sending the proper PCL codes. Some software
applications switch languages through their drivers.