 default values of CONTROL arguments.</span>
<span class="sd">    &quot;&quot;&quot;</span>

    <span class="n">required_params</span> <span class="o">=</span> <span class="p">[</span>
        <span class="s2">&quot;nelements&quot;</span><span class="p">,</span>
        <span class="s2">&quot;natoms&quot;</span><span class="p">,</span>
        <span class="s2">&quot;ngrid&quot;</span><span class="p">,</span>
        <span class="s2">&quot;lattvec&quot;</span><span class="p">,</span>
        <span class="s2