** '''[Australis]''' (Zhenshuo, Stephen)
*** Menu Panel Sub-Menu Explorations and refinements:
**** '''(Requires layout.css.flexbox.enabled true in about:config, click on "History"):'''
**** List Style Slide-Over: http://people.mozilla.com/~shorlander/panel-experiment-02/panel-experiment.html
**** Grid Style Slide-Over: http://people.mozilla.com/~shorlander/panel-experiment-03/panel-experiment.html