1<book>
2  <chapter>
3    <title>First Chapter</title>
4      Here is some text.
5    <section>
6      <title>First Chapter, First Section</title>
7        More text here.
8      <subsection>
9        <title>First Chapter, First Section, First Subsection</title>
10      </subsection>
11      <subsection>
12        <title>First Chapter, First Section, Second Subsection</title>
13      </subsection>
14    </section>
15  </chapter>
16  <chapter>
17    <title>Second Chapter</title>
18  </chapter>
19  <appendix>
20    <title>First Appendix</title>
21    <section>
22      <title>First Appendix, First Section</title>
23    </section>
24  </appendix>
25  <appendix>
26    <title>Second Appendix</title>
27  </appendix>
28</book>
29