You can search for identifiers within the package.
in-package search v0.2.0
type 'a t
val create : int -> 'a t
val add : 'a t -> 'a -> unit
val find : 'a t -> 'a -> 'a
val union : 'a t -> 'a -> 'a -> 'a
val extract : 'a t -> 'a list list