>: Sometimes, povray will complain the the error message
>: "#while loop didn't end in file where it started."  This is
>: observed in a #while loop containing macros.
>
>  Can you post a short example pov-code?

This is difficult because it depends on the behavior of
fopen, which varies from platform to platform.  It is possible
to make it more frequent by manipulating the source, but 
I don't think I'll be able to come up with a POV file to 
reproduce it reliably on other binaries.  Essentially, it is 
tied to manner in which fopen recycles file pointers, often 
it will use the last one that was free'd, but sometimes 
(on Linux anyway) it doesn't...

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