;;; mwheel.el --- Wheel mouse support
-;; Copyright (C) 1998, 2000-2013 Free Software Foundation, Inc.
+;; Copyright (C) 1998, 2000-2016 Free Software Foundation, Inc.
;; Maintainer: William M. Perry <wmperry@gnu.org>
;; Keywords: mouse
;; Package: emacs
(defun mwheel-scroll (event)
"Scroll up or down according to the EVENT.
-This should only be bound to mouse buttons 4 and 5."
+This should be bound only to mouse buttons 4 and 5 on non-Windows
+systems."
(interactive (list last-input-event))
(let* ((curwin (if mouse-wheel-follow-mouse
(prog1