You can search for identifiers within the package.
in-package search v0.2.0
type (+'a, 'b) t
type !'a key = 'a SETr_DS_HashCons.hash_consed
val empty : ('a, 'b) t
val add : 'a key -> 'b -> ('a, 'b) t -> ('a, 'b) t
val find : 'a key -> ('a, 'b) t -> 'b
val remove : 'a key -> ('a, 'b) t -> ('a, 'b) t
val mem : 'a key -> ('a, 'b) t -> bool
val iter : ('a key -> 'b -> unit) -> ('a, 'b) t -> unit
val map : ('b -> 'c) -> ('a, 'b) t -> ('a, 'c) t
val mapi : ('a key -> 'b -> 'c) -> ('a, 'b) t -> ('a, 'c) t
val fold : ('a key -> 'b -> 'c -> 'c) -> ('a, 'b) t -> 'c -> 'c