WASD refers to those 4 keys on the keyboard. In many PC games, these keys are shortcuts to character movement, also known as Hotkeys. They are often equivalent to the arrow keys, but can be used more easily by the left hand, while using the mouse with your right hand.
- W: walk forward (up arrow)
- A: turn left (left arrow)
- S: walk backward (down arrow)
- D: turn right (right arrow)
Note: the above assignment is the default for Guild Wars, but you can change the assignment of these keys to any other function of your choosing in the Control tab of the Options menu (F11).