SGML declaration for XML

[Chris Maden]

[Stefan Mintert]
> which is the correct SGML declaration for XML?
> 
> I found three:
> 
> 1a) <!SGML -- SGML Declaration for XML --
>        "ISO 8879:1986 (ENR)"
> 
> 1b) <!SGML -- SGML Declaration for XML --
>        "ISO 8879:1986 (WWW)"
> 
> 
> 	both in http://www.w3.org/TR/NOTE-sgml-xml-971215
> 	Comparison of SGML and XML
> 
> 2) <!SGML -- SGML Declaration for XML --
>      "ISO 8879:1986 (WWW)"
> 
> 	in http://www.sgmlsource.com/8879rev/n1955.htm
> 	ISO 8879 TC2

XML is from the W3C.  Trust the resources from there.  The "SGML
Declaration for XML" in the corrigendum for SGML is a sample.  It is
in no way authoritative with respect to XML.

> As far as I know (1b) is correct, since XML 1.0 reads:
> 
>   [5] Name  ::=    (Letter | '_' | ':') (NameChar)*
> 
> which means, a Name may start (NAMESTRT) with a ':'

That's correct, in pre-namespace XML.  The namespace specification
will impose additional constraints which a namespace-aware processor
would enforce.

-Chris
-- 
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