EMAPINFO

MapInfo serves as a methods of customizing some asthetic properties of a map which would otherwise be unchangeable, as well as adding the ability to use some Eternity specific features. MapInfo is used by editing the map's lump in a wad editor with the "View raw data" (XWE) option turned on. A basic MapInfo setup may be something similar to:

 [level info]
 levelname = Evil Hell Lab
 creator = DooMGuy667

This would change the automap and intermission screen names for your map to "Evil Hell Lab" and when the creator command is used in the console, it will output "DooMGuy667".