[ESS] How to show or find the matching parenthesis

[RICHARD M. HEIBERGER]

Download the highlight-parentheses.el
It shows multiple sets of nesting parentheses in different colors.

;;; highlight-parentheses.el --- highlight surrounding parentheses
;;
;; Copyright (C) 2007, 2009 Nikolaj Schumacher
;;
;; Author: Nikolaj Schumacher <bugs * nschum de>
;; Version: 1.0.1
;; Keywords: faces, matching
;; URL: http://nschum.de/src/emacs/highlight-parentheses/