Joachim Noreiko wrote:
--- alessandro ferrucci <a24 umbc edu> wrote:My understanding was that DocBook was not simply a set of tools but also its own DTD specification with its own elements,separate from XML.I'm starting to get out of my depth here, so what I say next could be total rubbish. :) What I have gathered from looking up DocBook specs and tutorials is that is *used* to be that, but has since been rewritten in terms of XML.
This is correct. SGML is a different set of rules than XML, although it is very similar. For example in SGML you can end a tag with <tag></>, where in XML this is illegal.. Also, docbook SGML used to be converted to PDF or HTML using jade, which uses DSSSL stylesheets. Nowadays we use docbook XML and convert to HTML via XSL stylesheets and to PDF through XSL-FO. Hope this clarifies (somewhat)