Talk:Key Bindings/@comment-184.65.144.125-20130710162307/@comment-208.53.88.11-20131026025008

Most mouses don't actually have a 4th mouse button but as previously stated, it would be by your thumb on the left side of the mouse. Generally, mouses made specifically for gaming or older mouses do have this button. I suggest you go into the controller settings and change the key to an alternate keyboard button.