To write the Left One Quarter Block symbol ▎ on keyboard using ALT codes; ALT+9614, just hold down the ALT key while typing the alt key code 9614. You have to use the num🌜eric keypad of your keyboard. If you don not have numeric keypad, hold down the Fnᩚᩚᩚᩚᩚᩚᩚᩚᩚ𒀱ᩚᩚᩚ and ALT keys while typing the alt code number.