Right, bob. That's exactly what I'm using it for. I have a set of 3 lights which are parented to figures (a photographic studio in poser), and when I apply a new light set to one light, I don't want it switching the others off. So, I've included the 'lightOn 1' line for all 3 lights in every .lt file. (Well, actually 'multiLight On' since mine have unique names). And yes, 'lightOn 0' turns a light off. mac