S2_to_S3.Let_syntax
val return : 'a -> ('a, 'd, 'e) t
include Infix3 with type ('a, 'd, 'e) t := ('a, 'd, 'e) t
val (>>=) : ('a, 'd, 'e) t -> ('a -> ('a, 'd, 'e) t) -> ('a, 'd, 'e) t
val (>>|) : ('a, 'd, 'e) t -> ('a -> 'b) -> ('a, 'd, 'e) t
module Let_syntax : sig ... end