[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Order of Declarations in DTD subsets
In message <3.0.1.16.19971222091430.52cf4bdc@p...>, Peter Murray-Rust <peter@u...> writes >Is it required that a declaration in the subset come before it is used. [I >have tried to find this in the spec and not been able to - please forgive >me if it's there]. > >An example: > >ELEMENTs must be declared for ATTLIST in validatable documents. So is the >following legal in this case: > ><!ATTLIST FOO BAR CDATA #REQUIRED> ><!ELEMENT FOO ANY> No, that's fine. As I understand it, the general philosophy is that the XML processor 'pauses for breath' after reading whichever DTD subsets it is asked to read (internal only, or both). It then sees what elements and attribute lists have been declared. (It is only at this point that it can 'do the right thing' as regards (a) reporting multiple element declarations and (b) merging, and possibly reporting on, multiple attribute list declarations.) >In a WF document this might have a different effect - the ATTLIST >declaration is WF and implicitly creates an ELEMENT declaration. When this >ELEMENT is declared, is it then an error? No, I don't think it's helpful to see the ATTLIST declaration as implicitly creating an ELEMENT declaration. This isn't an error. Richard. Richard Light SGML/XML and Museum Information Consultancy richard@l... xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ To (un)subscribe, mailto:majordomo@i... the following message; (un)subscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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