# Module Std_kernel.String_id

    module String_id: String_id

    module type S = sig .. end

    include String_id.S

    module Make: functor (M : sig
    val module_name : stringend) -> functor (* : sigend) -> S

`Make` customizes the error messages generated by `of_string`/`of_sexp` to include `module_name`.

    module Make_without_pretty_printer: functor (M : sig
    val module_name : stringend) -> functor (* : sigend) -> S

This does what `Make` does without registering a pretty printer.