You can search for identifiers within the package.
in-package search v0.2.0
type 'a t
type 'a arg = 'a t
val make : ?descr:string -> name:string -> destruct:(string -> ('a, string) Pervasives.result) -> construct:('a -> string) -> unit -> 'a arg
type descr = {
name : string;
descr : string option;
}
val descr : 'a arg -> descr
val int : int arg
val int32 : int32 arg
val int64 : int64 arg
val float : float arg
val string : string arg
val like : 'a arg -> ?descr:string -> string -> 'a arg
type ('a, 'b) eq =
| Eq : ('a, 'a) eq
val eq : 'a arg -> 'b arg -> ('a, 'b) eq option