smellenbergh wrote:
> Have a look at the isosurface manual at
> http://users.skynet.be/smellenbergh/iso_ind.html
> The part on "combining functions" has an example of "Blobbing
> difference" which does exactly what you want. If you are using Pov
> 3.5beta, you should adjust the syntax a little though.

Cool, thanks :-). I _knew_ I had seems such things somewhere.

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