They are in the G03_GData directory.
WM mostly worked out walkable mesh
WP mostly worked out.
WO Archive of references to textures/models/sfx
WG higher detail what you see in world thats not a WO. Archive with textures/models.
Motion files not fully worked out.
SOBJECT MOBJECT static or movable objects I think?
Texture loading almost 100% worked out.