You can search for identifiers within the package.
in-package search v0.2.0
module IntMap : sig ... end
type 'a store
val new_store : unit -> 'a store
type 'a rref
val make : 'a store -> 'a -> 'a store * 'a rref
val get : 'a store -> 'a rref -> 'a store * 'a
val set : 'a store -> 'a rref -> 'a -> 'a store
val eq : 'a store -> 'a rref -> 'a rref -> 'a store * bool