You can search for identifiers within the package.
in-package search v0.2.0
module IPM : sig ... end
type f = Dns_mirage.Make(S).f
val of_flow : S.TCP.flow -> f
val flow : f -> S.TCP.flow
val read_tcp : f -> (Cstruct.t, unit) Stdlib.result Lwt.t
val send_tcp : S.TCP.flow -> Cstruct.t -> (unit, unit) Stdlib.result Lwt.t
val send_tcp_multiple : S.TCP.flow -> Cstruct.t list -> (unit, unit) Stdlib.result Lwt.t
val send_udp : S.t -> int -> Ipaddr.t -> int -> Cstruct.t -> unit Lwt.t