<*EXTERNAL*> INTERFACEUuio ; FROM Ctypes IMPORT int, void_star, const_void_star; FROM Cstddef IMPORT size_t, ssize_t; PROCEDURE read (d: int; buf: void_star; nbytes: size_t): ssize_t; PROCEDURE write (d: int; buf: const_void_star; nbytes: size_t): ssize_t; END Uuio.