You can search for identifiers within the package.
in-package search v0.2.0
type 'a t
type key
val create : creator -> (creator -> key -> 'a) -> 'a t
val find : 'a t -> key -> 'a
val iter : (key -> 'a -> unit) -> 'a t -> unit
val fold : (key -> 'a -> 'acc -> 'acc) -> 'a t -> 'acc -> 'acc