sig
type t = Datatype.String.Set.t
val set : t -> unit
val add_set_hook : (t -> t -> unit) -> unit
val add_update_hook : (t -> t -> unit) -> unit
val get : unit -> t
val clear : unit -> unit
val is_default : unit -> bool
val option_name : string
val print_help : Format.formatter -> unit
val self : State.t
val name : string
val mark_as_computed : ?project:Project.t -> unit -> unit
val is_computed : ?project:Project.t -> unit -> bool
module Datatype : Datatype.S
val add_hook_on_update : (Datatype.t -> unit) -> unit
val howto_marshal : (Datatype.t -> 'a) -> ('a -> Datatype.t) -> unit
val equal : t -> t -> bool
val add_aliases : string list -> unit
val is_set : unit -> bool
val unsafe_set : t -> unit
val parameter : Typed_parameter.t
val add : string -> unit
val remove : string -> unit
val is_empty : unit -> bool
val get_set : ?sep:string -> unit -> string
val iter : (string -> unit) -> unit
val fold : (string -> 'a -> 'a) -> 'a -> 'a
val exists : (string -> bool) -> bool
val set_possible_values : string list -> unit
val get_possible_values : unit -> string list
type value
val find : string -> Parameter_sig.String_hashtbl.value
end