HP LaserJet 8000 Multifunction Printer series - Manual (Page 321)

Appendix D Printer Commands 321
Overview
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.
Note : The PCL 5e printer driver in this printer is not backward compatible with
older printers that use PCL 5e printer drivers.
Unless PCL 5e backward compatibility is required, HP recommends that
PCL 6 printer drivers be used to take full advantage of all printer features.