Hi John, don't know how to do exactly what you want re raster3d, but in order to avoid fiddling with the volume viewer I use a couple of aliases which make things faster, perhaps they will be useful to you too: #Usage cootmode_wire alias ^cootmode_wire ~rib; disp; color gold; color byhet; repr wire; setattr m lineWidth 2; volume # capfaces false style mesh meshlighting false squaremesh false color "#3333851effff" step 1; sop cap off; set depthCue; set dcStart 0.5; set dcEnd 0.7; background solid black; cofron; symclip 5 #Usage cootmode_wire_white alias ^cootmode_wire_white ~rib; disp; color gold; color byhet; repr wire; setattr m lineWidth 2; volume # capfaces false style mesh meshlighting false squaremesh false color "#00000000cccc" step 1; sop cap off; set depthCue; set dcStart 0.2; set dcEnd 1; background solid white; cofron; symclip 5 Also, to set maps or diffmaps to given rms level: # Sets map to x*RMS # Usage: sig #map_id rms alias ^map_sig volume $1 sdlevel $2 alias ^diffmap_sig volume $1 rmsLevel -$2 color #da1200000000 rmsLevel $2 color #0000bda00000 Or to just load map and diffmap with model from pdb, and set display settings of maps: #Load pdb and associated maps from EDS # Usage: load_pdb_and_maps pdb_id alias ^load_pdb_and_maps open 1000 $1; open 1001 edsID:$1; open 1002 edsdiffID:$1; cootmode_wire; map_sig #1001 1; diffmap_sig #1002 3 (Requires that the other aliases mentioned already exist, of course) Cheers, Oli.