Node.t</a></code><code><span class="keyword"> constraint </span><span class="type-var">'a</span> = [&gt; Html_Node.h1 ]</code></dt><dt class="spec type" id="type-child"><a href="#type-child" class="anchor"></a><code><span class="keyword">type </span>+'a child</code><code><span class="keyword"> = </span>[ <span class="type-var">'a</span> <a href="../../Html_Node#type-phrasing">Html_Node.phrasing</a><span class="keyword"> | </span><a href="../../Html_Node#type-other">Html_Node.other</a> ] <a href="../../Html_