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   Re: Control Characters

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  • From: John Cowan <cowan@locke.ccil.org>
  • To: XML Dev <xml-dev@ic.ac.uk>
  • Date: Wed, 03 Feb 1999 14:37:45 -0500

Eric Hellman scripsit:

> Why are the control characters x80-x9F allowed in XML character data, while
> x0-x8,xB,xC,xE-x1F are illegal?

No good reason.  I think there was a desire to keep the SGML declaration

> Has "BEL" been banished to a "Unisound" encoding ?;--}

I think it would be most useful to replace it with an empty element
> I have a DTD in which some entities are given the default value xFFFD in
> the external subset because they are placeholders for strings to be
> supplied in an internal subset with the document. Is this an appropriate
> use of Unicode's "replacement character"?

It's unusual but not erroneous.

John Cowan	http://www.ccil.org/~cowan		cowan@ccil.org
	You tollerday donsk?  N.  You tolkatiff scowegian?  Nn.
	You spigotty anglease?  Nnn.  You phonio saxo?  Nnnn.
		Clear all so!  'Tis a Jute.... (Finnegans Wake 16.5)

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