Abbreviation Help

[Dave H.]

In the following post, what does VP$IP and PFR mean??

UTG+2 and MP2 are uber-lags who seem to know each other, and are having a pissing contest as to who can take down the most pots. Both have VP$IP over 60, and PFR over 20.

[illunious]

These are PokerTracker preflop percentages. VPIP is "voluntarily put money in pot", similar to "Saw Flop" stat, but doesn't account for times you check in a blind (60 is very loose at a 10-handed table). PFR is pre-flop raise (20 is very aggressive at a 10-handed table).