Man pages matching name al_osx_get_window in section 3alleg5:

al_osx_get_window.3alleg5.en	debian 10 / allegro5-doc
al_osx_get_window.3alleg5.en	debian 11 / allegro5-doc
al_osx_get_window.3alleg5.en	debian 12 / allegro5-doc