he unit of measurement.</li>
<li><strong>width</strong> – Optional width of the form as a percent string (for example, ‘50%’).
Default sets the width automatically to contain all the widgets.</li>
<li><strong>min</strong> – </li>
<li><strong>max</strong> – Minimum and maximum values.  If a string, may contain units.  Otherwise units will be assumed to
be the same as those set by the units parameter.</li>
</ul>
</td>
</tr>
</tbody>
</table>
<dl class="docutils">
<dt>Attributes:</dt>
<dd>Attributes 