# Module Monitor_sig.Monitor.Value

    module Value: sig .. end

    val observe_int_fct : ?weak:bool -> ?period:int -> string -> (unit -> int) -> unit

    val observe_int : ?weak:bool -> ?period:int -> string -> int -> unit

    val observe_float_fct : ?weak:bool -> ?period:int -> string -> (unit -> float) -> unit

    val observe_float : ?weak:bool -> ?period:int -> string -> float -> unit

    val observe_bool_fct : ?weak:bool -> ?period:int -> string -> (unit -> bool) -> unit

    val observe_bool : ?weak:bool -> ?period:int -> string -> bool -> unit

    val observe_string_fct : ?weak:bool -> ?period:int -> string -> (unit -> string) -> unit

    val observe_string : ?weak:bool -> ?period:int -> string -> string -> unit

    val observe_int_ref : ?period:int -> string -> int Stdlib.ref -> int Stdlib.ref

    val observe_float_ref : ?period:int -> string -> float Stdlib.ref -> float Stdlib.ref

    val observe_bool_ref : ?period:int -> string -> bool Stdlib.ref -> bool Stdlib.ref

    val observe_string_ref : ?period:int -> string -> string Stdlib.ref -> string Stdlib.ref