I've recently completed a utility that provides a command line means of querying and manipulating Sauerbraten maps. Hopefully it will be useful to developers and mappers. You can find it here:
http://home.austin.rr.com/selliott4/sauer-map
Feel free to send me any comments or questions that you might have.
HOW-TO play sauerbraten
This document is now unmaintained since wiki:Multiplayer Guide has more current information and more contributors to edit it :)
[2006-08-22] (updated link:2006-12-10)