Hi Xena, the problem with this is that it will remove everything that ALL previous MAT files loaded, and also the maps etc that were in the original CR2. There is no easy answer, but in general you would want to make a MAT from the original CR2, so that at least you could get back to what you loaded from the library, without having to reload the entire figure. Undo's are not practical until we have computers with GB's of RAM, since the entire set of scene parameters would need to be saved, meaning just one global undo would mean doubling the RAM needed for the scene... Perhaps if Poser 5 could make a reverse MAT in RAM to undo each successive MAT application? Since MATS are small, this wouldn't use much memory, or they could even be written to disk as temp files. With enough thought, programming solutions could be found that wouldn't be too CPU or RAM intensive, it would seem. Dan http://www.zenwareonline.com for CR2Edit, ZenPaint, ZenTile, VueMaster and the complete line of Zenware graphics apps