Honest this is not a feature request.

I was curious as to why POV doesn't solve the problem of c.s. surfaces.

What are the difficulties of implementing, or the disadvantages of having
some sort of automatic precedence?

so...

union{
    box{0,1}
    box{0,2 translate y*1}
    pigment{White}
}

would resolve in order of listing, with the c.s. of the first box "beating"
the c.s. of the second box.

In the above example (and in many RLCoding situations) it doesn't make any
difference anyway, since the material is the same for both.

just curious ...

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