May 26, 2018
Norman Walsh’s book “DocBook: The Definitive Guide”
“DocBook The Definitive Guide” by Norman Walsh and Leonard Muellner with contributions from Bob Stayton ISBN 156592-580-7
This book is a gentle yet thorough introduction to the DocBook DTD which is used by, amongst others, the FreeBSD Documentation Project. A dead-tree edition of the book is published by O’Reilly & Associates, Inc., but the text is freely licensed under the GNU FDL.
The current edition purports to document DocBook v4.4 with the EBNF, HTML Forms, MathML and SVG modules.
An unexpanded edition of version 2.0.17 is also available. In this version, content models are shown with parameter entities rather than fully expanded.