>Apply a set of inclusion criteria and record the actions of the
filter to the <code>dtrackr</code> history graph. Because of the ... filter specification,
all parameters MUST BE NAMED. This function is the opposite of
<code><a href="exclude_all.html">exclude_all()</a></code> and the filtering criteria work to identify rows to
include i.e. the results include anything that match any of the criteria. If
<code>na.rm=TRUE</code> they also keep anything that cannot be evaluated by the criteria.</p>
    </div>

