To write the Leftwards Harpoon Over Rightwards Harpoon symbol ⇋ on keyboard using ALT codes; ALT+8651, just hold down the ALT key while typing the alt key code 8651. You have 🌠to use the numeri🌊c keypad of your keyboard. If you don not have numeric keypad, hold down the Fn and ALT keys while typing the alt code number.