Eureka is a map editor for the classic DOOM games, and a few related games such as Heretic and Hexen. It supports Linux, Windows and OS X. Eureka was created by Andrew Apted and ives at

This manual was written by Wesley Werner. If you find a mistake in this manual please report it here. If you want to contribute, fork the repo and send a pull request.

There is also a downloadable PDF version of this manual, and a printable cheat sheet.