Man pages matching name persp_project in section 3alleg4:

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