crism at oreilly.com
Mon Jul 27 20:34:53 BST 1998
> I need some clarification on the differences in the naming rules
> defined in the XML SGML Declaration and the Naming Rules defined in
> XML Part 1 Names and Tokens.
> My understanding of the Name restricts the 1st character position to
> a letter or a underscore or colon which is in sync with the SGML
> Declaration. But the NameChar allows underscores and colons in the
> remaining character positions which is at variance with the naming
> rules defined by the SGML Declaration.
> Can you clarify this for me?
Characters defined as NAMESTRT, LCNMSTRT, or UCNMSTRT are usable as
name characters; that is, name start characters are a strict subset of
name characters, and so definition as the former implies definition as
The relevant productions from ISO 8879 are:
 name character =
name start character |
 name start character =
LC Letter |
UC Letter |
Note that this information is not necessary to understand the XML
Recommendation; the name productions in REC-XML are correct as they
<!NOTATION SGML.Geek PUBLIC "-//Anonymous//NOTATION SGML Geek//EN">
<!ENTITY crism PUBLIC "-//O'Reilly//NONSGML Christopher R. Maden//EN"
<USMAIL>90 Sherman Street, Cambridge, MA 02140 USA" NDATA SGML.Geek>
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