>I have a couple questions regarding the POV-Ray with Subdivision project
> (http://www.cise.ufl.edu/~xwu/Pov-Sub/).
>
> 1) Is this program made obsolete by any recent beta versions of POV-Ray 
> 3.7?

No. That is, it should still execute fine.
However, it's a modified version, the improvements in the 3.7 betas
are not in that code... I'm unsure if the authors will update POV-sub
when 3.7 comes out of beta. Note: the standard POV mesh code
is highly optimized, so IMHO it's unlikely that such extended syntax
will be adopted as standard.

> 2) Is there a way I can add conditional checks to my pov file to check
> whether I am running the modified executable?

Well, I guess it depends. You could write a batch file to swap the
standard executable with the modified one, and have it swap
an include file at the same time, then #include it and test the
variable you declare there.

-- file subdivision.inc
#declare SUBDIVISION = on;

-- file subdivision.bak
#declare SUBDIVISION = off;

-- file somefile.pov
#include "subdivision.inc"
#if (SUBDIVISION = on)
   // non-standard code
#else
  // standard code
#end

-- file swap_pov.bat (for DOS)
cd **povdirectory**
ren pvengine.exe pvengine.tmp
ren pvengine.bak pvengine.exe
ren pvengine.tmp pvengine.bak
ren subdivision.inc subdivision.tmp
ren subdivision.bak subdivision.inc
ren subdivision.tmp subdivision.bak

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