This file is the generation peramiter for The Infinite Realms, a realm with nothing really all that special beyond a few neat things. Such as the following map: http://mkv25.net/dfma/poi-25201-exposedcavesystem

The exact location for this, should anyone be interested, is here: http://i100.photobucket.com/albums/m6/worldwaker/EmbarkLocationExact.png
If needed, I will upload a save to accompany this.