You can search for identifiers within the package.
in-package search v0.2.0
type !'a t = string -> 'a
val bool : bool t
val string : string t
val int : ?min:int -> ?max:int -> int t
val device : (int * int) t
val range : int list t
val list : sep:char -> 'a t -> 'a list t
val pair : sep:char -> 'a t -> 'b t -> ('a * 'b) t
val triple : sep:char -> 'a t -> 'b t -> 'c t -> ('a * 'b * 'c) t