Example - Article

<?xml version="1.0"?>
<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
<article>
  <articleinfo>
    <title>Sample Article</title>
  </articleinfo>
  <para>This is an introductory paragraph.</para>
  <sect1>
    <title>First Section</title>
    <para>This is a paragraph.</para>
     <sect2>
       <title>This is a section level 2</title>
       <para>Blah, blah, blah... </para>
     </sect2>
     <sect2>...</sect2>
     <sect2>...</sect2>
  </sect1>
  <sect1>...</sect1>
  <sect1>...</sect1>
  <sect1>...</sect1>
</article>