You can search for identifiers within the package.
in-package search v0.2.0
module Random : sig ... end
module List : sig ... end
val charlist_to_string : char list -> string
val join_string_list : string list -> string -> string
val sum_int : int list -> int
val (<|) : ('a -> 'b) -> 'a -> 'b
val (%) : ('a -> 'b) -> ('c -> 'a) -> 'c -> 'b