- trekkie
- |
- Exalted Legendary Member
- gamertag: [none]
- user homepage:
Custom Edition? That would be HEK for creation. It comes with instructions and a tutorial. I would post a link but my tablet keyboard strangly doesn't have brackets, so you'll have to cut-and-paste.
http://hce.halomaps.org/index.cfm?fid=411
There's another version, HEK plus, and a bunch of other tools for modding on that site, so... have fun! unless that's not what you meant.