Some Info regarding PS, PCL etc.

PostScript is a programming language optimized for printing graphics and text.

Here is some links about printing, especially in Linux:

http://www.linuxprinting.org/kpfeifle/LinuxKongress2002/Tutorial/III.PostScript-and-PPDs/III.PostScript-and-PPDs.html

http://www.cs.indiana.edu/docproject/programming/postscript/postscript.html