<?xml version="1.0"?> <!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>Forword</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>