ectors.html"><a href="vectors.html#na_vals"><i class="fa fa-check"></i><b>2.4.5</b> Missing data</a></li>
</ul></li>
<li class="chapter" data-level="2.5" data-path="help.html"><a href="help.html"><i class="fa fa-check"></i><b>2.5</b> Getting help</a>
<ul>
<li class="chapter" data-level="2.5.1" data-path="help.html"><a href="help.html#r-help"><i class="fa fa-check"></i><b>2.5.1</b> R help</a></li>
<li class="chapter" data-level="2.5.2" data-path="help.html"><a href="help.html#rhelp"><i class="fa fa-check"></