UDMF

UDMF (or unabbreviated to Universal Doom Map Format) is a currently in-progress specification for laying out maps in a more textual way, it is essentially a new map format for Doom engine based games. The format is not backwards-compatible with older Doom engine games.

The idea for this format was first suggested by James "Quasar" Haley as a universal solution to add unlimited extra information to map elements, so that the wide range of new features in Doom source ports can be better supported by editors and implemented in the map information more easily. The UDMF format is correctly being developed with help of Christoph "Graf Zahl" Oelckers and Pascal "CodeImp" vd Heiden and a few others. The name for the map format was coined by Russell Rice.

The UDMF map format is expected to be supported in Eternity, ZDoom, GZDoom, Doom Builder 2 and Slade.