Man pages matching name create_lzss_unpack_data in section 3alleg4:

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