You can search for identifiers within the package.
in-package search v0.2.0
type t
include sig ... end
val t_of_sexp : Sexplib.Sexp.t -> t
val sexp_of_t : t -> Sexplib.Sexp.t
val to_string : t -> string
val of_string : string -> t
val secp384r1 : t
val secp521r1 : t
val prime256v1 : t