+@node DocBook
+@subsection DocBook
+
+For inserting LilyPond snippets it is good to keep the conformity of
+our DocBook document, thus allowing us to use DocBook editors,
+validation etc. So we don't use custom tags, only specify a convention
+based on the standard DocBook elements.
+
+@subheading Common conventions
+
+For inserting all type of snippets we use the @code{mediaobject} and @code{inlinemediaobject} element, so our snippets can be
+formatted inline or not inline.
+The snippet formatting options are always provided in the @code{role} property of the innermost element (see in next sections). Tags are
+chosen to allow DocBook editors format the content gracefully.
+The DocBook files to be processed with @command{lilypond-book} should have the extension @file{.lyxml}.
+
+@subheading Including a LilyPond file
+
+This is the most simple case. We must use the @file{.ly} extension for the included file, and insert it as a standard @code{imageobject},
+with the following structure:
+
+@example
+<mediaobject>
+ <imageobject>
+ <imagedata fileref="music1.ly" role="printfilename" />
+ </imageobject>
+</mediaobject>
+@end example
+
+Note that you can use mediaobject or inlinemediaobject as the outermost element as you wish.
+
+@subheading Including LilyPond code
+
+Including LilyPond code is possible by using a @code{programlisting}, where the language is set to @code{lilypond} with the following structure:
+
+@example
+<inlinemediaobject>
+ <textobject>
+ <programlisting language="lilypond" role="fragment verbatim staffsize=16 ragged-right relative=2">
+\context Staff \with @{
+ \remove Time_signature_engraver
+ \remove Clef_engraver@}
+ @{ c4( fis) @}
+ </programlisting>
+ </textobject>
+</inlinemediaobject>
+@end example
+
+As you can see, the outermost element is a @code{mediaobject} or @code{inlinemediaobject}, and there is a @code{textobject} containing the @code{programlisting} inside.
+
+@subheading Processing the DocBook document
+
+Running @command{lilypond-book} on our @file{.lyxml} file will create a
+valid DocBook document to be further processed with @file{.xml}
+extension. If you use
+@uref{http://@/dblatex@/.sourceforge@/.net@/,dblatex}, it will create a
+PDF file from this document automatically. For HTML (HTML Help,
+JavaHelp etc.) generation you can use the official DocBook XSL
+stylesheets, however, it is possible that you have to make some
+customization for it.
+