You can search for identifiers within the package.
in-package search v0.2.0
type 'a key
type ('key, 'a) t
val create : 'a -> ('key, 'a) t
val compare_key : 'a key -> 'a key -> int
val get : ('key, 'a) t -> 'key key -> 'a
val add : ('key, 'a) t -> 'a -> 'key key * ('key, 'a) t
val fold : ('key key -> 'a -> 'b -> 'b) -> ('key, 'a) t -> 'b -> 'b
val find : ('key, 'a) t -> ('a -> bool) -> 'key key
val int : 'key key -> int
val iter : ('key key -> 'a -> unit) -> ('key, 'a) t -> unit
val remove : ('key, 'a) t -> 'key key -> ('key, 'a) t
val modify : ('key, 'a) t -> 'key key -> 'a -> ('key, 'a) t
val card : ('key, 'a) t -> int