On Mon, 09 Nov 1998 20:19:56 -0800, Ken <tyl### [at] pacbellnet> wrote:
>Pov 3.1r1 and Pov 3.1a may be to identify a minor bug change that
>occured the week the official version was released. It had something
>to do with the crackle testure and I believe one of the non windows
>version features. Chris Young made an anouncement on both
>povray.general and c.g.r.r.about this if you want to look up the specifics.

Crackle and the turbulence warp were messing with the RNG, and there were
a couple of things broken in other places: a missing case in blob cylinders,
and a problem that must have led to unopened files attempting to be closed 
in the expression parser.  I'm not 'in the know' or anything, I just happen
to keep all of the old official releases of source code around for my 
superpatch work, and these are the things a quick 'diff -ur' shows.

In addition to 3.1a, there were some other small changes made in the Windows
code between the release of the official binary and the release of the 
official source.  Some of us call this 3.1a+, though nobody knows what
the POV-Team calls it (still 3.1a in optout.h) and it's the codebase the
next version of the superpatch will derive from.

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