PLUS code (awesome font)
all major classes

fa-scale-inverse
fa-scale-inverse
fa-dangles
fa-rock
fa-slip
fa-beat
fa-beat-fast
fa-pulse
fa-pulse-loop
flip vertical-50 (50/100/150/200)
flip horizontal-50 (50/100/150/200)
fade in (100/150/200/250) fa-flip-horizontal-100 (100/150/200/250 )
fa-slide-up
fa-max-50 (50/75/100/125/150/200/225/250/275/300)
fa-silver
fa-silver-dark
fa-silver-light
fa-silver-light-inverse
Text only:
fa-glow-white
fa-glow-white-in
fa-glow-white-out
fa-glow-black
fa-glow-black-in
fa-glow-black-out