article.xml

<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="stylesheet/docbook-markdown.xsl"?>
<!DOCTYPE subject SYSTEM "/usr/share/xml/docbook/schema/dtd/5.0/docbook.dtd">
<article>
  <articleinfo>
    <title>An example article</title>

    <author>
      <firstname>Your first name</firstname>
      <surname>Your surname</surname>
      <affiliation>
        <address><email>foo@example.com</email></address>
      </affiliation>
    </author>

    <copyright>
      <year>2000</year>
      <holder>Copyright string here</holder>
    </copyright>

    <abstract>
      <para>If your article has an abstract then it should go here.</para>
    </abstract>
  </articleinfo>

  <section>
    <title>My first section</title>

    <para>This is the first section in my article.</para>

    <section>
      <title>My first sub-section</title>

      <para>This is the first sub-section in my article.</para>
    </section>
  </section>
</article>