In some article merin@wpi.wpi.edu (David L. Willis) writes:
> What exactly is Rot13, and how does one undo it? This has probably been
> posted before, but I'm new here, so if someone could help me out, it
> would be greatly appreciated.

Rot13 means that every character is 'shifted' 13 places to the Left
(Or right, ofcourse)  eg: an 'a' becomes an 'n', 'b' becomes 'o' etc.
If you're on a Unox machine you can rot13/unrot13 an article by

$ tr a-zA-Z n-za-mN-ZA-M <file