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<h1 class="Pt" id="s1">1 Part1</h1>
<h2 class="Ch" id="s2">1 Chap1</h2>
<p>Text.</p>
<h2 class="Ch" id="s3">2 Chap2</h2>
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<h3 class="Sh" id="s4">2.1 Section1</h3>
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<h3 class="Sh" id="s5">2.2 Section2</h3>
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<h4 class="Ss" id="s6">2.2.1 Subsection1</h4>
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<h1 class="Pt" id="s7">2 Part2</h1>
<h2 class="Ch" id="s8">3 Chap3</h2>
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<a href="#s5">Section2</a>
<a href="#s2">Chap1</a>
<a href="#s7">Part2</a></p>
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