Eitan,
	There's a comprehensive help system. Read it.

To answer your question, Bicubic patches are a a 3D surface made up of a
mesh of triangles. Good for creating things like folds in paper at the
spine of a book. I suggest you leave well alone if you are new to POVray
and use a modeller for these, I reccommend Moray, find it somewhere on
www.povray.org

	Graham.

Eitan Tal wrote:
> 
> What is Bicubic patch? I have seen there a small matrix of 1 and 0
> 
> same with cubic, and quartic and poly

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