// meh. only custom sky.

gfx/env/3dm747Bk.tga
gfx/env/3dm747Dn.tga
gfx/env/3dm747Ft.tga
gfx/env/3dm747Lf.tga
gfx/env/3dm747Rt.tga
gfx/env/3dm747Up.tga