heya; no, the materials are assigned to polygons, not semi-polygons. :) rds doesn't do materials. what i do is make a different group for each material, then assign them in uvmapper. what i would do for the nostrils in rdd is this... grab the head, jump in, zoom in on the nostrils and grab the insides. you can grab the outsides and make those invisible if they're in your way. grab all the nostril polys, then go to selection:name polygons. name them, then export the figure back out. in uvmapper, grab the group called 'nostrils' (or whatever you named it), assign it to material 'nostrils' and group 'head'. save from uvmapper. (er, hopefully rdd wouldn't have messed up the uvmap between these operations... hmm...)