</span> <span class="cn">NULL</span>, initial_values <span class="op">=</span> <span class="cn">NULL</span>, </span>
<span>  control <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/list.html" class="external-link">list</a></span><span class="op">(</span><span class="op">)</span>, <span class="va">...</span><span class="op">)</span></span></code></pre></div>
    </div>

    <div id="arguments">
    <h2>Arguments</h2>


<dl><dt id="arg-fixed">fixed<a class="anchor" aria-label="ancho