Man pages matching name enable_triple_buffer in section 3alleg4:

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