Thorsten Froehlich <tho### [at] trfde> wrote:
> No, it can be much more complex than that. Go "Up" twice on the page whose
> link I posted. It is actually from a dissertation discussing various
> functions, some of which require more than a handful of parameters.

  Could someone write a short summary?

  If it's not just a (user-defined) function which takes certain parameters
and returns a value/color, then what is it?

-- 
                                                          - Warp

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