val compare : t -> t -> int
val equal : t -> t -> bool
module Set : Stdlib.Set.S with type elt = t
module SetLabels : Stdlib.MoreLabels.Set.S with type elt = t and type t = Set.t
module Map : Stdlib.Map.S with type key = t
module MapLabels :
Stdlib.MoreLabels.Map.S with type key = t and type 'a t = 'a Map.t