Functor Bottom.Make_Datatype

module Make_Datatype: 
functor (Domain : Datatype.S-> Datatype.S with type t = Domain.t or_bottom
Datatype constructor.
Parameters:
Domain : Datatype.S

include Datatype.S_no_copy
val copy : Datatype.t -> Datatype.t
Deep copy: no possible sharing between x and copy x.