I'd show you how to use it, but in Poser every flavor of anisotropic reflections, even in SuperFly/Cycles nodes, works like crap. If you see individual polygons like here, you can try subdividing, but the result is still weird nonsense.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)