You can search for identifiers within the package.
in-package search v0.2.0
type t =
| UTC
| Local
| UTC_Plus of int
val current : unit -> t
val change : t -> unit
val gap : t -> t -> int
val from_gmt : unit -> int
val to_gmt : unit -> int
val is_dst : unit -> bool
val hour_of_dst : unit -> int