Although the book, chapter, and other element content
models only allow one subtitle, the *info elements that use
the %bibliocomponent.mix; parameter entity permit more than
one subtitle. In fact, it permits more than one title. I think
that is an artifact of treating bilbiocomponent.mix elements
as a bag of elements to choose from. I believe the intent is
to allow a single title and subtitle per element, but that is not
enforcable with the current DTD structure using the
bibliocomponent.mix parameter entity.
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I'm going to close this bug report because it is not the intent
of the DTD to support multiple subtitles. The upcoming
version 5 DTD in RelaxNG will enforce the single subtitle rule.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
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The content model of book and chapter each only support zero
or one subtitle. Having two subtitles isn't allowed. See:
http://www.docbook.org/tdg/en/html/book.html and
http://www.docbook.org/tdg/en/html/chapter.html
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Although the book, chapter, and other element content
models only allow one subtitle, the *info elements that use
the %bibliocomponent.mix; parameter entity permit more than
one subtitle. In fact, it permits more than one title. I think
that is an artifact of treating bilbiocomponent.mix elements
as a bag of elements to choose from. I believe the intent is
to allow a single title and subtitle per element, but that is not
enforcable with the current DTD structure using the
bibliocomponent.mix parameter entity.
Logged In: YES
user_id=193218
I'm going to close this bug report because it is not the intent
of the DTD to support multiple subtitles. The upcoming
version 5 DTD in RelaxNG will enforce the single subtitle rule.