"Mike Williams" wrote
> Isosurface intersections and merges (& and |) are the wrong way 
> round  in beta 8
> They were the wrong way round before. The beta 8 way is considered
> correct.

Thank you for the listing.

According to POV Help 6.1.3.3., & and | are logical operators.  
Thus, the result of (A & B) or (A | B) should be always boolean 
values of 0 and 1.  However, these expressions return min() 
or max() values in isosurface functions of beta 8.   
I think this is wrong behavior.

For me, && and || are more familiar as logical operators 
because those are used as so in Mathematica, C, etc.
But unfortunately, & and | were adopted as logical operators
in the previous POV-Ray version.

R. Suzuki

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