I will try that. Right now I am wondering if it locks up when I alt-tab to another screen and then back. I definately lose the actual screen update. Just dragging the Tk box to somewhere else makes the text messages freeze. But it looks like it's still doing work so I will let it keep munching. As far as translating the magnet and adjusting the MT dial, moving a magnet around certainly changes the target's shape in different ways than tweaking that magnet dial. But I guess that's pretty obvious. I thought I had looked around for the "affects" list for magnets too. I guess it is yet another thing that poser-python doesn't have access to. Ah well..