sig
type t
val ty : t Type.t
val name : string
val descr : t Descr.t
val packed_descr : Structural_descr.pack
val reprs : t list
val hash : t -> int
val pretty_code : Format.formatter -> t -> unit
val internal_pretty_code : Type.precedence -> Format.formatter -> t -> unit
val pretty : Format.formatter -> t -> unit
val varname : t -> string
val mem_project : (Project_skeleton.t -> bool) -> t -> bool
val copy : t -> t
val pair : Equality.elt -> Equality.elt -> t Equality.trivial
val mem : Equality.elt -> t -> bool
val add : Equality.elt -> t -> t
val remove : Equality.elt -> t -> t Equality.trivial
val union : t -> t -> t
val inter : t -> t -> t Equality.trivial
val intersects : t -> t -> bool
val compare : t -> t -> int
val equal : t -> t -> bool
val subset : t -> t -> bool
val iter : (Equality.elt -> unit) -> t -> unit
val fold : (Equality.elt -> 'a -> 'a) -> t -> 'a -> 'a
val for_all : (Equality.elt -> bool) -> t -> bool
val exists : (Equality.elt -> bool) -> t -> bool
val filter : (Equality.elt -> bool) -> t -> t Equality.trivial
val cardinal : t -> int
val choose : t -> Equality.elt
val elements : t -> Equality.elt list
end