You can search for identifiers within the package.
in-package search v0.2.0
val make : int32 -> 'a -> 'a list
val length : 'a list -> int32
val nth : 'a list -> int32 -> 'a
val take : int32 -> 'a list -> 'a list
val drop : int32 -> 'a list -> 'a list
val mapi : (int32 -> 'a -> 'b) -> 'a list -> 'b list
val mapi_s : (int32 -> 'a -> 'b Lwt.t) -> 'a list -> 'b list Lwt.t