Bibliography
- X - a portable, network-transparent window system
- by X Consortium, Inc.
- pub by Open Software Foundation
- 1994
- X(7)
- gs - Ghostscript (PostScript and PDF language interpreter
and previewer)
- by L. Peter Deutsch, mailto:ghost@aladdin.com
- pub by Open Software Foundation
- 2002
- gs(1)
- Designing Letter and Reply Mail
- by United States Postal Service
- pub by United States Postal Service
- June 2003
- Publication 25
- http://pe.usps.gov/text/Pub25/Pub25.htm