Re: IDREFS

[Murata Makoto <mura034@attglobal.net>]

James Clark wrote:

> > On the other
> > hand IDREFs are an XML 1.0 DTD feature that is purely to do with
> > validation.
> 
> Also note that there are important DTDs that use IDREFS.  Notably XHTML 
> uses it in the basic tables modules and DocBook also uses it.
> 
> I think it would a significantly loss from a marketing perspective not to 
> able fully to validate XHTML or DocBook.

DTDs have ID, IDREF, and IDREFS, but it does not have IDS.  At present, 
<list><key>...</key></list> is allowed.  Are there any reasons?

Cheers,

Makoto