Module Kwlookup

module Kwlookup: sig .. end

module type OrderedType = sig .. end
module type S = sig .. end
module Map: 
functor (Ord : OrderedType) -> S with type key = Ord.t
module Alist: 
functor (Ord : OrderedType) -> S with type key = Ord.t
module Hash: 
functor (Ord : OrderedType) -> S with type key = Ord.t