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Re: DG SURFACEs: opaque vs. transparent

Andrew wrote:
> Is there a way to make DG SURFACEs opaque as opposed
> to transparent?  I've got lines showing.
> I'm not talking about hidden line removal, rather
> the fact that other graphs that go "under" the
> surface (according to the perspective) show though.
> Thuis is when, e.g., I draw a surface and then a 2D
> plot, projected onto one of the walls of the aquarium.

I'd look here for inspiration: