> By my reading, none of the characters in the 
> ranges 0-#x7, #xb, #xe-#x1a have any agreed-upon semantics de jure or de 
> facto (let's go down to the mall and do some ).

The only reasonable use I've thought of for these characters is so
that you can directly refer to them *as characters*.  For example, if
I want to encode the termcap file in XML, it seems quite reasonable to
be able to refer to escape as .  In this case the lack of agreed
semantics is irrelevant: the XML document is defining the sematics.

-- Richard

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