Heh. If you parent a prop to a body part THEN save it to the props library, it will remember its parent. Works very cute for stuff like swords -- no matter what pose the figure has, when you import the sword it will snap over to where that right hand currently is. I'd have to open a file or my copy of "Secrets of Figure Creation with Poser 5" (the single greatest book a Poser content creator can buy) to tell you what the code lines are. I dislike props for a lot of reasons, but for this application my real dislike is that they are "messy." I prefer a single .obj file with proper body parts, and I'll do the trickery within that.