Man pages matching name find_dialog_focus in section 3alleg4:

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