how to use multi-threading, is it available now?

Today I find bricscad support multi-threading, I read the help found this "PARALLELIZATION: enabled multi-threaded display regeneration, using multiple processor cores". Is this means bricscad can use more cup cores when it's zoom the dispaly? I try to enable this and test a 5MB big file, I didn't feel anything speed up. Is this feature will be use in future release? I see the "reserved for future use"