heck"></i><b>18.1.9</b> isObject()</a></li>
<li class="chapter" data-level="18.1.10" data-path="200_robject.html"><a href="200_robject.html#iss4"><i class="fa fa-check"></i><b>18.1.10</b> isS4()</a></li>
</ul></li>
<li class="chapter" data-level="18.2" data-path="200_robject.html"><a href="200_robject.html#determining-type-of-object-assigned-to-robject"><i class="fa fa-check"></i><b>18.2</b> Determining type of object assigned to RObject</a></li>
<li class="chapter" data-level="18.3" data-path="200_robject.