Quick question: How to set multiple filters to tracedata?

Question is self explanatory. How do i set multiple filters in util.TraceLine()?

If by filter you mean entity, to define multiple entities to filter, use a table of entities on your tracedata filter.

This way :
{ LocalPlayer(), entityOne, entityTwo }

If by filter you mean masks
[lua]
MASK_WATER | MASK_OPAQUE | MASK_DEADSOLID --etc
[/lua]

Thanks.