> I think you're basically forcing this concept onto national standards 
> which lack it. I don't think that most of the national standards 
> actually define the semantics of the characters they encode 
> (categorizations, case mapping, sort order), and although they assign 
> byte sequences to represent their characters, I'm not sure they 
> actually present this in terms of assigning integers to them, in the 
> sense of code points v. byte sequences.

Yeah.  Let's take, say, ISO 8859-1:

http://anubis.dkuug.dk/JTC1/SC2/WG3/docs/n411.pdf

No "semantics", just an assignment of abstract characters to numbers
and the respective bit patterns.

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