You can search for identifiers within the package.
in-package search v0.2.0
type 'a t
val t : (string * int) t
val map : ('a -> 'b) -> 'a t -> 'b t
val map2 : ('a -> 'b -> 'c) -> 'a t -> 'b t -> 'c t
val to_list : 'a t -> 'a list