David Carlisle, repeating my similar question some time back.
I'll add it to the faq .

Like the earlier questionner, I 'wanted' this for non
ASCII output.
If I remember, the follow up went something like,
put in a 'dummy' valid XML character, then post process
to change  it to a 'disallowed' character.

Regards, DaveP


>> Something special about null character?
>yes it's not allowed in XML. But then neither is character 1 
>(not checking for
>disallowed characters is a known feature of the IE parser, if I recall)
>
>the XML char production is:
>
><prod id="NT-Char"><lhs>Char</lhs> 
><rhs>#x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD] 
>| [#x10000-#x10FFFF]</rhs> 
><com>any Unicode character, excluding the
>surrogate blocks, FFFE, and FFFF.</com> </prod>
>
>in otherwords nothing in the ascii control range except tab, line feed
>and newline.


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