What are all the keys used in The Binding of Isaac?
I'm going to configure my joystick using one of the tools suggested at How to setup the joypad for Binding of Isaac? (Xpadder, JoyToKey, QJoyPad, etc.), and for this reason I wish to know beforehand what are all the keys used in this game, so I can configure them before playing and won't need to configure more keys mid-game.
I know the first in-game level shows the controls, but that screen is not complete. There are at least two more keys (Q and P) that are not listed there. This is the reason I'm asking this question: I want to know the complete list of all controls.