Func viscluster

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Entity description

A VIS optimisation brush entity. It appears to tell VVIS that all leaves within its volume can see each other. This can greatly reduce the time VVIS takes when compiling a map. It is only useful when used on large, open areas, where large areas of a map can be seen at once.

Even though it reduces compiling time, it does not help to optimise your map. You should attempt to optimise your map first, with proper usage of Func_detail, Hint brushes and areaportals.