Eric, This is all wonderful and very useful (the trans mapping will be great for doing feathers). Many thanks. But... I have a small problem. The latest update seems to muck up the Export function from the UVMapper. It's odd, if there is already a file named (for example) leaf.tif it will save ok but if saving as a new file I get an unknown error. Closing down C3 and deleting AGrows gets rid of the problem. I've had some odd problems with C3 recently so it may be something to do with my setup (Windows 98SE, Athlon XP 1800, 736 MB RAM) but I thought you should know... Mark