Autorun
Autorun (short for automatic run) is a hotkey that causes the player character to run forward until canceled. It can be canceled by pressing the autorun key again, or by giving any manual input to run forward or backward (such as W or S). Turning and strafing do not cancel autorun.
Default bindings
By default, the binding is set to Numlock on the Windows version or Clear (Fn+6) on the Mac version.[1]
Alternative bindings
It is not uncommon for players to rebind this key to something more convenient, such as Shift + W. Often, many skills will be bound to the surrounding keys (Alt and/or Shift ASD, QE, ZXC) in addition to the standard WASD or ↑←↓→ movement controls, meaning one has consolidated many of their keybinds to one hand allowing them to have a greater amount of usage with less movement required
Due to the increase in usage of multi-button mice, it has become known for players to link commands such as this that are used frequently outside of combat to one of the buttons on their mice.