n class="keyword">class</span> <span class="keyword">type</span>  <a href="class-type-style/index.html">style</a> = <span class="keyword">object</span> ... <span class="keyword">end</span></code></div><div class="spec module" id="module-DataItem"><a href="#module-DataItem" class="anchor"></a><code><span class="keyword">module</span> <a href="DataItem/index.html">DataItem</a> : <span class="keyword">sig</span> ... <span class="keyword">end</span></code></div><div class="spec class-type" id="class-type-layout