# Document sections.
[sect0]
<h1{id? id="{id}"}>{title}</h1>
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[sect1]
<h3{id? id="{id}"}>{numbered?{sectnum} }{title}</h3>
<div class="sectionbody">
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</div>

[sect2]
<h2{id? id="{id}"}>{numbered?{sectnum} }{title}</h2>
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[sect3]
<h4{id? id="{id}"}>{numbered?{sectnum} }{title}</h4>
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[sect4]
<h5{id? id="{id}"}>{title}</h5>