You can search for identifiers within the package.
in-package search v0.2.0
type t = unit =
| ()
val unit : t
val unit_s : t Lwt.t
val unit_e : (t, 'a) result
val unit_es : (t, 'a) result Lwt.t
val equal : t -> t -> bool
val compare : t -> t -> int
val to_string : t -> string
val catch : ?catch_only:(exn -> bool) -> (unit -> unit) -> unit
val catch_f : ?catch_only:(exn -> bool) -> (unit -> unit) -> (exn -> unit) -> unit
val catch_s : ?catch_only:(exn -> bool) -> (unit -> unit Lwt.t) -> unit Lwt.t