 was paused. If you try and resume tracking a
data frame with too many groups (as defined by <code>options("dtrackr.max_supported_groupings"=XX)</code>)
then the resume will fail and the data frame will still be paused. This can
be overridden by specifying a value for the <code>.maxgroups</code> parameter.</p>
    </div>

    <div class="section level2">
    <h2 id="ref-usage">Usage<a class="anchor" aria-label="anchor" href="#ref-usage"></a></h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><