ALT-I        # show/hide tutorial
ALT-P        # show/hide preferences (options)
ALT-SHIFT-B  # show/hide buttons
ALT-SHIFT-M  # switch dark/bright mode
ALT-SHIFT-F  # switch fullscreen on/off

ALT-minus    # fontsize --
ALT-SHIFT-1  # fontsize ++

# for productive work
Alt-R        # compile / run
Alt-S        # stop all runs

ALT-SHIFT-FL  # show/hide logs
CTRL-I       # show helpfile for cursor location