module type Infix2 =Same as Infix, except the monad type has two arguments. The second is always just passed through.sig
..end
type ('a, 'b)
monad
val (>>=) : ('a, 'b) monad ->
('a -> ('c, 'b) monad) -> ('c, 'b) monad
val (>>|) : ('a, 'b) monad -> ('a -> 'c) -> ('c, 'b) monad