The Hog 4 family of consoles all share a common set of useful multi-purpose modifier keys that when held down extend the base functionality of other keys and wheels on the front panel similar way to a Shift or Control key works on personal computers. There are several modifier keys but the core modifier keys in the Hog 4 OS are Pig, Open, Delete, Backspace, Set, Cue and Move.
Pig Key Modifier Examples:
Pig + I-Wheel : Changes wheel to proportional intensity mode.
Pig + Move : Pastes information into the selected location.
Hog 4 OS Key Combinations has a full list of commands that use the Pig key.