This is Aladdin Ghostscript 5.0, the non-GPL version that comes with a licence different from the GPL. Read the file PUBLIC in the work/gs5.0 directory or in /usr/local/share/ghostscript/5.0/doc/PUBLIC after installation for details ! Ghostscript is the well-known PostScript interpreter which is available for all common and most esoteric platforms and supports many different printers and some displays. The official ghostscript Web page: http://www.cs.wisc.edu/~ghost/index.html Thomas Merz has written a Ghostscript manual which is available in PDF from this site (456k) and also from Thomas Merz's site in Germany. http://www.cs.wisc.edu/~ghost/merz.html On the german site the manual is also available in German language. http://www.muc.de/~tm/free/free.html