IP/OOP/ is a checkraise always also a raise?

[pasita]

Is a checkraise always also a raise? Is a 2bet OOP always a checkraise when HU on flop? (BTW I assume 2bet flop is equal to PT3's Raise flop?)

I was thinking of making some custom 2Bet stats and just separate by position in the hud to avoid making separate check raise stats. Would this always work (in HU pots)?

What does the OOP/IP in the hud mean exactly in multiway pots? OOP to any player? First flop aggressor? OOP to last preflop aggressor? IP means I need to be in position to all players? First flop aggressor? Last preflop aggressor?

[kraada]

Yes, if there are two players and you are out of position and you 2bet you must have check/raised. The only way you can make a 2bet is by facing the initial bet. Out of position your options are check or bet - if you bet you could not face the bet, so you must have checked.

OOP means out of position to any player - IP means in position relative to all opponents.