In   3.8.1.1.13.1 Float functions and macros,   in the in-built documentation,
it has this:

"adj_range2(V, InMin, InMax, OutMin, OutMax)    Like f_range(), but adjusts
input values in the range [InMin, InMax] to the range [OutMin, OutMax]."

But there's no f_range() in POV-Ray, that I can find. Is that an old,
no-longer-included function?

OR, is it meant to refer to the function directly above it in the docs,

adj_range(V, Min, Max)

?

This latter possibility seems to be the more logical one, IMO.

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