<chapter xmlns="http://docbook.org/ns/docbook" id="Chapter">
  <title>Chapter</title>
  <section id="Section1">
    <title>Section 1</title>
    <para>Paragraph 1 starts here...</para>
    <para>Paragraph 2 starts here...</para>
    <section id="Section1.1">
      <title>Section 1.1</title>
      <para>And one more paragraph</para>
    </section>
  </section>
</chapter>