You can search for identifiers within the package.
in-package search v0.2.0
val (:=) : 'a ref -> 'a -> unit
val incr : int ref -> unit
val decr : int ref -> unit
module Time : sig ... end
val pure_apply : ('a -> 'b) -> 'a -> 'b
val pure_test : ('a -> bool) -> 'a -> bool