DLL-filer som börjar med Umbra Software Ltd.

umbra.dll	Umbra Runtime Library (DLL)	umbra32.dll	Umbra Occlusion Booster Runtime Library (DLL)
umbraob32.dll	Umbra Occlusion Booster Runtime Library (DLL)

umbra.dll	Umbra Runtime Library (DLL)
umbra32.dll	Umbra Occlusion Booster Runtime Library (DLL)
umbraob32.dll	Umbra Occlusion Booster Runtime Library (DLL)