Am 16.05.2013 09:50, schrieb Kenneth:
> Perhaps a naive question, but I want to make sure I understand this:
>
> Does the simple use of #undef to un-define something cause any internal problems
> in POV-Ray if the 'something' doesn't even exist? Or does it all *require* a
> surrounding #ifdef block?

You'll get a parse warning if you try, but if you can live with that 
there's nothing to worry about.

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