You can search for identifiers within the package.
in-package search v0.2.0
val debug : ('a, unit, string, unit Lwt.t) format4 -> 'a
val info : ('a, unit, string, unit Lwt.t) format4 -> 'a
val error : ('a, unit, string, unit Lwt.t) format4 -> 'a
val trace : S.traced_operation list -> unit Lwt.t