Pro pedal is an internal function of the rear Fox shock that makes it easier to pedal efficiently while still letting the shock work as it was intended.
This weekend I found out that with some training, you can ride a Stumpjumper fast on pavement and even pass road bikers (never thought that would happen since I'm not skinny). I never imagined this bike would be so efficient and still have a few inches of travel to work with. As Borat would say, very nice.