You can search for identifiers within the package.
in-package search v0.2.0
module H : sig ... end
val of_b58check_opt : string -> H.t option
val of_b58check_exn : string -> H.t
val of_b58check : string -> H.t Tezos_error_monad.Error_monad.tzresult
val to_b58check : H.t -> string
val to_short_b58check : H.t -> string