Thanks for the info. I've put together a quick and dirty
reader that does about 10% of the smallest .world file
(the village). Here's the first complete structure I've been
able to pull out:



This isn't .ms3d format because I haven't found any uv coordinates yet;
this is just tris and verts exported as .obj.

It does seem that the .world files are like you described, a series of structures
built with modeling software and then glued together into a .world file.