Man pages matching name transpose_font in section 3alleg4:

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