Applied Languages

DocBook (SGML Version) - - 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.

Get Going with DocBook - - Mark Galassi's readable introduction.

Tutorial Markup Language (TML) - - An interchange SGML-based format designed to separate the semantic content of a question from its screen layout or formatting.