You can search for identifiers within the package.
in-package search v0.2.0
enum
Genum.Make
module AstHelpers : GTCommon.GTHELPERS_sig.S
val trait_name : string
module P : sig ... end
exception Found of int
val default_index : int
class g : (Ppxlib.longident * Ppxlib.expression) list -> (bool * Ppxlib.type_declaration list) -> object ... end
val create : P.plugin_constructor