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Subject: RE: DOCBOOK-APPS: SGML vs XML
Conditional sections are described in productions [61] - [65] in the XML spec[1]. And yes, parameter entities can be used: "If the keyword of the conditional section is a parameter-entity reference, the parameter entity must be replaced by its content before the processor decides whether to include or ignore the conditional section." kind regards Peter Ring [1] http://www.w3.org/TR/REC-xml#sec-condition-sect -----Original Message----- From: Trevor Jenkins [mailto:trevor.jenkins@suneidesis.com] Sent: 3. juli 2002 11:45 To: fyl2xp1 Cc: DocBook applications Subject: Re: DOCBOOK-APPS: SGML vs XML On Wed, 3 Jul 2002, fyl2xp1 <vnhu38f93@subdimension.com> wrote: > My advantages and disadvantages to going XML are as follows: > [Note, this is XML and SGML primarily in the context of DocBook] There are "features" of SGML that have not been incorporated into XML. The one I miss most and that keeps me using SGML is INCLUDE/IGNORE marked sectons. Especially as the status keyword can be the replacement of an entity reference. Although there are techniques for achieving this with XML (by hacking XSLT code to evaluate element attribtues) I believe that the SGML feature is safer and preferable. It is clear in the SGML document instance what will/wont be processed; there is no such clarity with an XML document instance. I also have a liking for the & operator in content models. It's absence in XML makes for some contorted content models. Likewise inclusions and exclusions. These SGML "features" make for an economy of expression that XML makes verbose. My current documentation project cals for delivery in XML. However, I treat this as a final form much like PDF or Word format. The master version is SGML using many of the missing things. First stage of delivery is to use openjade to create the XML parallel. Regards, Trevor British Sign Language is not inarticulate handwaving; it's a living language. Support the campaign for formal recognition by the British government now! Details at http://www.fdp.org.uk/ -- <>< Re: deemed!
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