Content outline: Allow sections to be expanded and shortened
>>> [!note] Migrated issue
<!-- Drupal.org comment -->
<!-- Migrated from issue #3560377. -->
Reported by: [justafish](https://www.drupal.org/user/161058)
Related to !137 !140 !153 !150 !152 !151 !148 !149 !146 !143 !144 !145 !141 !139 !142 !138 !111
>>>
<h3 id="summary-problem-motivation">Problem/Motivation</h3>
<p>tbd</p>
<h4 id="summary-steps-reproduce">Steps to reproduce</h4>
<h3 id="summary-proposed-resolution">Proposed resolution</h3>
<h3 id="summary-remaining-tasks">Remaining tasks</h3>
<h3 id="summary-ui-changes">User interface changes</h3>
<h3 id="summary-api-changes">API changes</h3>
<h3 id="summary-data-model-changes">Data model changes</h3>
issue