It's an ALT code for Windows. If you're on a normal computer, hold down the ALT button and hit 139 on the number pad. If you're on a laptop without number pad, hit the number lock button, then hold ALT. On my laptop, there's some smaller numbers over the letters on the right side of the keypad. So it's still "139". On my keyboard, the letters are "jl9". Anyways, if you have trouble, just look up accent codes windows and it should come up.