Control Characters

John Cowan cowan at
Wed Feb 3 19:38:24 GMT 1999

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		cowan at
	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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