<!DOCTYPE procedure PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
          "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
<procedure><title>An Example Procedure</title>
<step>
  <para>
    A Step
  </para>
</step>
<step>
  <para>
    Another Step
  </para>
  <substeps>
    <step>
      <para>
        Substeps can be nested indefinitely deep.
      </para>
    </step>
  </substeps>
</step>
<step>
  <para>
    A Final Step
  </para>
</step>
</procedure>