PNM2PPA GhostScript Print Filter PPA (Printing Performance Architecture) is a closed, proprietary protocol developed by Hewlett Packard for a short-lived series of DeskJet printers. In essence,
the PPA protocol moves the low-level processing of the data to the host computer rather than the printer.
PPS Print Server The PPS printing system was originally developed for the Linux operating system as a replacement for the BSD
lpr printing system.
The PPR Spooler This page is a directory of information of use to users of PPR. PPR is a printer spooler designed primarily for spooling jobs to
PostScript printers.
