You can search for identifiers within the package.
in-package search v0.2.0
type 'a t =
| Conv : {
docv : string option;
parse : 'a parse;
print : 'a print;
} -> 'a t
| String : string t
| Int : int t
| Float : float t
| Bool : bool t
| File : string t
| Enum : {
choices : (string * 'a) Nonempty_list.t;
to_string : 'a -> string;
| Comma_separated : 'a t -> 'a list t