n degrees.</p></li>
</ul>
</section>
<section id="input-output-units">
<h2>Input/Output Units<a class="headerlink" href="#input-output-units" title="Permalink to this heading">¶</a></h2>
<p>Specifies the default units to use for the other input keys and to use
for saving to the results file.</p>
<ul class="simple">
<li><p><strong>length_unit</strong>: The unit of length to use. Default value is
‘angstrom’.</p></li>
<li><p><strong>pressure_unit</strong>: The unit of pressure to use. Default value is
‘