ass="op">(</span><span class="va">x</span><span class="op">)</span></span></code></pre></div>
    </div>

    <div id="arguments">
    <h2>Arguments</h2>
    <dl><dt>x</dt>
<dd><p><a href="ProjectProblem-class.html">ProjectProblem</a>.</p></dd>

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

<p><code>character</code> feature 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="co"