Man pages matching name request_refresh_rate in section 3alleg4:

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