title: $:/core/ui/UntaggedTemplate

<$button popup="$:/state/tagpopup" qualifyTiddlerTitles="yes" class="btn-invisible tw-untagged-label tw-tag-label">untagged</$button>
<$reveal state="$:/state/tagpopup" type="popup" position="below" qualifyTiddlerTitles="yes"><div class="tw-drop-down">
<$list filter="[untagged[]!is[system]] -[tags[]] +[sort[title]]" template="$:/core/ui/ListItemTemplate"/>
</div></$reveal>