"PICKUP" puts the item on the slot field on your cursor or visa versa, "QUICK_MOVE" is a shift click, "SWAP" acts as a hotbar or offhand swap (e.g. if your "Action" is set to "SWAP" and the "Button" set to 0-8, it will swap the item in the "Slot" field to one of those hotbar slots (starting from 0) or visa versa, "Button" being set to 40 will swap the item in ...