ml-agents/docs/doxygen/footer.html

<!-- HTML footer for doxygen 1.8.14-->
<!-- start footer part -->
<!--BEGIN GENERATE_TREEVIEW-->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
  <ul>
    $navpath
  </ul>
</div>
<!--END GENERATE_TREEVIEW-->
<!--BEGIN !GENERATE_TREEVIEW-->
<hr class="footer"/>
<!--END !GENERATE_TREEVIEW-->
</body>
</html>