PostScript was designed as a device independent language. To be able to access device specific features like selecting different paper trays and turning on different imaging models, each printer vendor supplies a PostScript Printer Definition or PPD file. This library reads those PPD files and provides functions that allow a program to modify PostScript print jobs to acces these special features.
ppdfilt | filter that inserts printer specific commands into print jobs | Mehr ...
ppdfilt is a filter program designed to be used within a filter script or from the command line tool to insert printer specific commands to a PostScript print job. This can be used to tell the printer to duplex or staple the print job, or tell it what paper tray to draw paper from. In the GNULpr printing environment, users do not call ppdfilt directly, but its features are accessed by using 'lpr' or 'gpr' (see)
