Gilles Tran wrote:
> The reason is that function n,n works as an image_map, which exists in the
> x,y plane (and from top to bottom in the y direction IIRC). The z in this
> case isn't taken into account.

Ah, now it makes sense. I couldn't find a reference to it in the help file 
earlier, but I just looked again and there it was - "6.7.11.16  Function Image". 
My computer must have been experiencing a temporal reference breach; I doubt if 
it had anything to do with the fact that I was searching for it at 2am.

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