Man pages matching name set_keyboard_rate in section 3alleg4:

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