arangosh> stmt.explain().plan.rules;
[ 
  <span class="hljs-string">"move-calculations-up"</span>, 
  <span class="hljs-string">"move-filters-up"</span>, 
  <span class="hljs-string">"remove-redundant-calculations"</span>, 
  <span class="hljs-string">"remove-unnecessary-calculations"</span>, 
  <span class="hljs-string">"move-calculations-up-2"</span>, 
  <span class="hljs-string">"move-filters-up-2"</span>, 
  <span class="hljs-string">"use-indexes"</span>, 
  <span class="hljs-string">"remove-filter-covered-by-index"</span>, 
  <span class="hljs-string">"use-index-for-sort"</span>, 
  <span class="hljs-string">"remove-unnecessary-calculations-2"</span>, 
  <span class="hljs-string">"reduce-extraction-to-projection"</span> 
]