You can search for identifiers within the package.
in-package search v0.2.0
val id : 'a -> 'a
val create_hashtbl : ('a * 'b) list -> ('a, 'b) Hashtbl.t
val gcd : int -> int -> int
val lcm : int -> int -> int
val find_rational : float -> int * int
val numerator : float -> int
val denominator : float -> int