He's talking about the key actions tab found under game category. WASD key movement.
You don't actually have to create a loop as regular key actions automatically loop while you are pressing the key down. To regulate how often it loops you should add a pause action part to the end of the action list.
Create an execute a script action for each key you want to use for controlling the movement & include these lines...
south...
game.CurrentCharacter.Destination = { x = game.CurrentCharacter.Position.x, y = (game.CurrentCharacter.Position.y + 20) }
north...
game.CurrentCharacter.Destination = { x = game.CurrentCharacter.Position.x, y = (game.CurrentCharacter.Position.y +
- 20) }
east...
game.CurrentCharacter.Destination = { x = (game.CurrentCharacter.Position.x + 20), y = game.CurrentCharacter.Position.y }
west...
game.CurrentCharacter.Destination = { x = (game.CurrentCharacter.Position.x - 20), y = game.CurrentCharacter.Position.y }
You may want to add a small pause action part after the execute a script action to prevent the engine from looping the actions too quickly. Say 50ms or something.
You may also want to come up with some method of determining if more than one key is pressed or for if you want to allow diagonal movement.