Hi Michael (or anyone else who may know how to do this),

I'm pretty sure the answer is 'no,' but I thought I'd ask anyway. Is there anyway to create a transparent or slightly transparent surface (not show through the underlying curves)?

If not, perhaps you can add this feature in V4. Even a 'hack' like putting *75 in the name of the color to set opacity to 75%. I seem to remember you saying something somewhere about not supporting opacity b/c of having to calc the hidden lines correctly-- but for some reason I thought that would be done at a rendering abstraction layer.

FWIW, I'm building some 'cones of movement' with the MoI mannequin for an ergonomics study and would like to be able to 'see-thru' those cones. Thanks.