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*From*:**Patrick Ohl <Patrick.Ohl@o-h-l.de>***To*: Warren Hedley <w.hedley@auckland.ac.nz>,"xml-dev@lists.xml.org" <xml-dev@lists.xml.org>*Date*: Fri, 27 Jul 2001 13:20:48 +0200

Hi Warren, Hmm, this CellML is a bit messed up I guess. I didn't get it to work either. To your question: The quotes are okay. Xerces shouldn't bother anyway, as the subject of agitation is within a IGNORE section. If you overwritten the use_mathml_dtd parameter entity, it is a different thing. But I still couldn't validate a simple example for the following reasons as well. 1.: If you don't overwrite (or change) the use_mathml_dtd parameter entity to 'INCLUDE' the element 'math' is not defined. 2.: The URI for the MathML2.dtd is wrong. It probably should be http://www.w3.org/TR/MathML2/dtd/mathml2.dtd . 3.: I had problems with overriding it. I am quite sure that it is correct, if my prolog is something like: <?xml version="1.0" encoding="iso-8859-1"?> <!DOCTYPE model SYSTEM "http://www.cellml.org/cellml/cellml_1_0.dtd" [ <!ENTITY % mathml_dtd_path "'http://www.w3.org/TR/MathML2/dtd/mathml2.dtd'"> <!ENTITY % use_mathml_dtd "INCLUDE"> ]> My IDE still mocks about an none defined 'math' element. Probably the IDEs fault or did I misunderstood something? The DTD could be validated by changing the section to : <!ENTITY % use_mathml_dtd "INCLUDE"> <![%use_mathml_dtd;[ <!ENTITY % mathml-charent.module "IGNORE"> <!ENTITY % mathml_dtd_path "'http://www.w3.org/TR/MathML2/dtd/mathml2.dtd'"> <!ENTITY % mathml_dtd PUBLIC "-//W3C//DTD MathML 2.0//EN" %mathml_dtd_path;> %mathml_dtd; <!ATTLIST %cn.qname; %MATHML.Common.attrib; %att-type; %att-base; %att-definition; %att-encoding; cellml:units CDATA #REQUIRED > ]]> Well, Warren I give up. Maybe ask them CellML people... Greetings, Patrick Warren Hedley wrote: > > Hi folks, > > The short story is: > > The CellML ( http://www.cellml.org/ ) DTD, which makes use of the MathML > DTD, includes the following code: > > 1 <!ENTITY % use_mathml_dtd "IGNORE"> > 2 <![%use_mathml_dtd;[ > 3 <!ENTITY % mathml-charent.module "IGNORE"> > 4 <!ENTITY % mathml_dtd_path "'MathML-20010221/mathml2.dtd'"> > 5 <!ENTITY % mathml_dtd PUBLIC "-//W3C//DTD MathML 2.0//EN" > 6 %mathml_dtd_path;> > 7 %mathml_dtd; > 8 ]]> > > The Xerces parser reckons that "The system identifier must begin with > either a single or double quote character" on line 6, which I take it > means that it regards the apostrophes in the mathml_dtd_path entity > as just plain characters. Is this the correct behaviour? > > The long story is: > > Michael Kay's Aelfred parser, XP 0.5, and SP 1.3 all let this one > through and behave as expected. > > If it wasn't already obvious what I was trying to do, I would like > to be able to have an entity that I can use to set the path to the > MathML DTD in a particular document's internal subset, if different > from the one specified there. > > Thanks, > Warren Hedley > > -- > Warren Hedley >

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**Follow-Ups**:**Re: correct behaviour for entities as system identifiers***From:*Rob Lugt <roblugt@elcel.com>

**References**:**correct behaviour for entities as system identifiers***From:*Warren Hedley <w.hedley@auckland.ac.nz>

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