lly of class <code>lm</code> or <code>glm</code></p></dd>

</dl></div>
    <div id="value">
    <h2>Value</h2>
    

<p>a vector of variable names</p>
    </div>

    <div id="ref-examples">
    <h2>Examples</h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span><span class="kw">if</span> <span class="op">(</span><span class="kw"><a href="https://rdrr.io/r/base/library.html" class="external-link">require</a></span><span class="op">(</span><span class="va"><a href="https://