>> Presumably it would also result in an invisible object too though. ;-)
> 
>   Not if you scale by 0 on only one axis.

Ah, good point...

>> Does POV-Ray actually apply all the matricies and invert only the final 
>> one? Or does it construct them in inverted form in the first place?
> 
>   IIRC it calculates the inverted matrices when parsing and uses them
> when rendering.

I thought that would be the case.

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