You can search for identifiers within the package.
in-package search v0.2.0
module Arg : S
val zyva : Arg.loc -> (int * int) -> Arg.arg -> (int * int * int) array -> (Arg.act, _) t_store -> Arg.act
val test_sequence : Arg.arg -> (int * int * int) array -> (Arg.act, _) t_store -> Arg.act