You can search for identifiers within the package.
in-package search v0.2.0
type key
type !'a t
val create : int -> 'a t
val clear : 'a t -> unit
val add : 'a t -> key -> 'a -> unit
val find : 'a t -> key -> 'a
val length : 'a t -> int
val stats : 'a t -> Stdlib.Hashtbl.statistics