<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
          "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
<book>
<title>An Example Book</title>
<titleabbrev>Example</titleabbrev>
<bookinfo>
  <legalnotice><para>No notice is required.</para></legalnotice>
  <author><firstname>Norman</firstname><surname>Walsh</surname></author>
</bookinfo>
<dedication>
<para>
This book is dedicated to you.
</para>
</dedication>
<preface><title>Foreword</title>
<para>
Some content is always required.
</para>
</preface>
<chapter><title>Required Chapter</title>
<para>
At least one chapter, reference, part, or article is required in a book.
</para>
</chapter>
<appendix><title>Optional Appendix</title>
<para>
Appendixes are optional.
</para>
</appendix>
</book>