+ <td class="snns top italic grass">iterated structural successor for closures</td>
+ <td class="snns top grass">fqus ( ⦃?,?,?⦄ ⊐* ⦃?,?,?⦄ )</td>
+ <td class="snnn top grass">fqus_weight fqus_drops fqus_fqup fqus_fqus</td>
+ <td class="snnn top grass">