Man pages matching name adjust_sample in section 3alleg4:

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