ss="keyword">end</span></code></div><div class="spec module" id="module-Hgroup"><a href="#module-Hgroup" class="anchor"></a><code><span class="keyword">module </span><a href="Hgroup">Hgroup</a> : <span class="keyword">sig</span> ... <span class="keyword">end</span></code></div><div class="spec module" id="module-Hr"><a href="#module-Hr" class="anchor"></a><code><span class="keyword">module </span><a href="Hr">Hr</a> : <span class="keyword">sig</span> ... <span class="keyword">end</span></code></div><div cla