PostScript
PostScript is a page description language created by Adobe. Its main
use is as an embedded language in many laser printers. Programs are
created in PostScript (usually generated automatically, but they can
and sometimes are generated by hand) and sent to the printer to be run.
The result of running the program is an image of what will eventually
be placed onto a sheet of paper.
More recently, some vendors have been adding what's called Display PostScript
to their X servers. This extension allows the creation
of complex on-screen images by merely sending a PostScript program to the
server where it
is run just like it would be in a printer.
Jeff Bailey / bailey@mcs.kent.edu