This is a collection of dvips PostScript header and dvips config files. They control certain features of the printer, including: A4, A3, usletter, simplex, duplex / long edge, duplex / short edge, screen frequencies of images, black/white invers, select transparency / paper for tektronix 550/560, manual feeder, envelope feeder, and tray 1, 2 and 3, and printing a PostScript grid underneath the page material—very useful for measuring and eliminating paper feed errors!

The author is Volker Kuhlmann.