You can search for identifiers within the package.
in-package search v0.2.0
html
Html.Make
module AstHelpers : GTCommon.GTHELPERS_sig.S
val trait_name : string
module P : sig ... end
val app_format_sprintf : loc:AstHelpers.loc -> AstHelpers.Exp.t -> AstHelpers.Exp.t
module H : sig ... end
class g : (Ppxlib.longident * Ppxlib.expression) list -> (bool * Ppxlib.type_declaration list) -> object ... end
val create : P.plugin_constructor