From 2e4a0a90718bae5534d74a6dd3d232c7d9bf61be Mon Sep 17 00:00:00 2001
From: Glenn Morris <rgm@gnu.org>
Date: Sat, 31 Aug 2013 18:52:54 -0700
Subject: [PATCH] Further tweak previous change

---
 lisp/frame.el | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lisp/frame.el b/lisp/frame.el
index bd023dae37c..3668f24ba01 100644
--- a/lisp/frame.el
+++ b/lisp/frame.el
@@ -875,7 +875,8 @@ Set this to the symbol `dark' if your background color is dark,
 if you want Emacs to examine the brightness for you.
 
 If you change this without using customize, you should use
-`frame-set-background-mode' to update existing frames."
+`frame-set-background-mode' to update existing frames;
+e.g. (mapc 'frame-set-background-mode (frame-list))."
   :group 'faces
   :set #'(lambda (var value)
 	   (set-default var value)
-- 
2.39.2