Those are the shadowcam settings for each light. They determine how shadows look and are postioned. Most decent tutes on lighting will include something regarding them, but you can get some great info by doing a seach on "shadowcams" in the poser technical forum. P5 gives us a lot more options and stuff for futzing with shadowcams.

thou and I, my friend, can, in the most flunkey world, make, each of us, one non-flunkey, one hero, if we like: that will be two heroes to begin with. (Carlyle)