You can search for identifiers within the package.
in-package search v0.2.0
type t = int * int
val sym : t -> t
val assert_adjacent_fractions : int -> t -> t -> unit
val iter_farey : int -> ?starting1:t -> ?starting2:t -> (t -> unit) -> unit
val next_farey : int -> t -> t
val prev_farey : int -> t -> t
val rev_iter_farey : int -> ?starting1:t -> ?starting2:t -> (t -> unit) -> unit
val list_farey : int -> t list