[ccp4bb]: Generating surface figures

[<phubbard@post.its.mcw.edu>]

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Hi add,

Another non-CCP4/non-O question for you. Does anyone know how to generate
a figure where only the hidden part of the surface is displayed?

I have a GRASP surface file covering a ligand binding cavity, and would
like to show it overlayed with the ligand. So would like to just show the
hidden part of the surface (tantamount to a Z-slice/slab, but not since
the plane is not flat)

I have been using POVSCRIPT/POVRAY.

Thanks

AGS