st"</code> varies <code>names_from</code> values fastest, resulting in a column
naming scheme of the form: <code>value1_name1, value1_name2, value2_name1, value2_name2</code>. This is the default.</p></li>
<li><p><code>"slowest"</code> varies <code>names_from</code> values slowest, resulting in a column
naming scheme of the form: <code>value1_name1, value2_name1, value1_name2, value2_name2</code>.</p></li>
</ul></dd>


<dt id="arg-names-expand">names_expand<a class="anchor" aria-label="anchor" href="#arg-na