Take that list with a grain of salt, it's not comprehensive or 100% accurate. Here are a few things I noticed right off: .MAT and .MOR for Poser??? All the MAT pose files I've seen for Poser are .pz2. Ditto for the MOR and MAP. If you name your MAT poses .mat, you may inadvertently associate it with a different program (e.g. a Bryce .mat file). Also, the small .rsr files contain the thumbnails for more than just cr2's. They are used on Windows for ALL the library thumbnails, so you will find them in every folder in the library. Large .rsr files do contain a copy of the OBJ file also, but this page does not mention that it's a binary version you can't work with in any other program (or text editor). -Adam