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DocBook (SGML Version) - http://www.oasis-open.org/docbook/
A DTD maintained by the DocBook Technical Committee of OASIS. It is particularly well suited, but not limited, to books and papers about computer hardware and software. |
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Tutorial Markup Language (TML) - http://www.ilrt.bris.ac.uk/netquest/about/lang/
An interchange SGML-based format designed to separate the semantic content of a question from its screen layout or formatting. |
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Get Going with DocBook - http://www.galassi.org/mark/mydocs/docbook-intro/docbook-intro.html
Mark Galassi's readable introduction. |