You can search for identifiers within the package.
in-package search v0.2.0
val foldl_lwt : ('a -> 'b -> 'a Lwt.t) -> 'a Lwt.t -> 'b list -> 'a Lwt.t
val foldr_lwt : ('a -> 'b -> 'b Lwt.t) -> 'a list -> 'b Lwt.t -> 'b Lwt.t
val sequence : 'a Lwt.t list -> 'a list Lwt.t