Support for "wide" Unicode characters

[Terry Reedy]

>     Code point
>
>         If you imagine Unicode as a mapping from integers to
>         characters, each integer represents a code point. Some are
>         really used for characters. Some will someday be used for
>         characters. Some are guaranteed never to be used for
>         characters.

I find this ambiguous.  Is 'codepoint' a synonym for integer (in range 0 to
MAX)? or just for integer that does or might someday represent a character?
Does 'some'  (in all three uses) refer to integers or codepoints?