"Samuel Benge" <stb### [at] hotmailcom> wrote in message
news:411### [at] hotmailcom...
>  try making it "HF_Cylinder ( function{ F(x,y,z).grey } "
>
> Since you have declared a pigment as a function, you have to add the
> ".grey" to the end of the invoked function. I think that might be what
> Bob was saying....
>
> HF_Cylinder (
>   function{ F(x,y,z).grey } , off, off,
>   <60,60>, on, "", <0.5, 0.0, 0.5>, <0.5, 1.0, 0.5>, 0.4, 0.3
> )

Not really... :-) A much better answer, Samuel! I made the mistake of trying
F(x,y,z).gray without the function {} wrapper and then went about changing
the macro itself. Bad idea. So real glad you saved the day by replying with
this solution. I should have known to do this!

Bob H.

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