Man pages matching name destroy_gfx_mode_list in section 3alleg4:

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