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   Re: [xml-dev] XML and mainframes, yet again (was RE: [xml-dev] Somecomme

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Rick Jelliffe scripsit:

> Actually, at the time that XML 1.0 was created, the control characters 80-9F
> were undefined in Unicode.  Actually, I believe they still are (I am writing
> this away from an internet connection): Unicode only says what control
> characters they are by default, but a particular application can map them to
> private semantics.

That is so.  However, there has only ever been one practical set of uses
for #x80 through #x9F (as distinct from the hex bytes 80 through 9F as used
in various encodings).  For example, #9A represents CONTROL SEQUENCE INTRODUCER,
and is the 8-bit equivalent of the "ESC [" used in X3.64 (aka "ANSI") 
terminal controls.

John Cowan           http://www.ccil.org/~cowan              cowan@ccil.org
Please leave your values        |       Check your assumptions.  In fact,
   at the front desk.           |          check your assumptions at the door.
     --sign in Paris hotel      |            --Miles Vorkosigan


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