CA,
I agree with you that color("colorname", [<0 n > 1 is as useless as a hip pocket in a singlet except under very rare circumstances. I just quoted it as an example of how the producers of the documentation jumped from Coding 101 to Coding 105, leaving those of us with learning difficulties floundering.

What people like me need is more attention being paid to those things that programmers take for granted. As I have been working on this thread, and playing with OpenScad, I've picked up these basics, but it's been a couple of months since Roxy suggested that OpenScad was a better program than, say Rhino for the hobbyist. If these very, very basic facts had been presented to me way back then, I'd be creating the Millennium Falcon by now. I'm quickly finding out that OpenScad is easy enough to use. It will be better when I can see how to do in it what I can do in Rhino (which is not much, actually)

OME