docker-roundcube-server/roundcube/roundcubemail-1.3.6/skins/classic/includes/settingstabs.html

<div id="tabsbar">
<roundcube:object name="settingstabs" class="tablink" selClass="tablink-selected" />
<roundcube:container name="tabs" id="tabsbar" />
<span id="settingstababout" class="tablink"><roundcube:button command="about" type="link" label="about" title="about" class="tablink" /></span>
<script type="text/javascript"> if (window.rcmail) rcmail.add_onload(rcube_init_settings_tabs); </script>
</div>