Man pages matching name freeze_mouse_flag in section 3alleg4:

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