Bonus: For a toggle button, use a
script to remember a state and invert it, driving animation forwards or
backwards from up-to-down or from down-to-up. (from Cosmo
Worlds 2.0 by Pioneer Joel)
Bonus: For a radio button, use a script
to remember which button was pressed, and check to see they're not the
same button! (from Cosmo
Worlds 2.0 by Pioneer Joel)