You can search for identifiers within the package.
in-package search v0.2.0
exception Invalid
type 'a t = {
generation : int;
value : 'a;
}
val generation : int ref
val wrap : 'a -> 'b t
val maybe : 'a t -> ('b -> 'c) -> 'd -> 'e
val extract : 'a t -> 'b
val resume : unit -> unit