<div class="text">
  <div
    ng-repeat="o in hierarchy"
    ng-click="requestGrammar(o)"
    style="padding: 2px 0"
    ng-style="{'margin-left': 0.75 * $index + 'em'}">
    ‣ {{ o.long }}
  </div>
</div>

<div class="text">
  <div
    ng-repeat="o in hierarchy"
    ng-class="{underline: hover}"
    ng-mouseenter="hover = o.sections"
    ng-mouseleave="hover = false"
    ng-click="requestGrammar(o)"
    style="padding: 2px 0"
    ng-style="{'margin-left': 0.75 * $index + 'em'}">
    ‣ {{ o.long }}
  </div>
</div>

Add visual cue when an sg label can be clicked
Add visual cue when an sg label can be clicked
