Man pages matching name poll_keyboard in section 3alleg4:

poll_keyboard.3alleg4.en	debian 10 / allegro4-doc
poll_keyboard.3alleg4.en	debian 11 / allegro4-doc
poll_keyboard.3alleg4.en	debian 12 / allegro4-doc
poll_keyboard.3alleg4.en	debian 13 / allegro4-doc