From: Lute Kamstra <lute@gnu.org>
Date: Thu, 16 Oct 2003 13:15:09 +0000 (+0000)
Subject: (Mode Line Format): Mention force-mode-line-update's argument.
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(Mode Line Format): Mention force-mode-line-update's argument.
---

diff --git a/lispref/modes.texi b/lispref/modes.texi
index e29dd25587a..0668e04c172 100644
--- a/lispref/modes.texi
+++ b/lispref/modes.texi
@@ -1139,10 +1139,12 @@ update of the mode line so as to display the new information or
 display it in the new way.
 
 @c Emacs 19 feature
-@defun force-mode-line-update
+@defun force-mode-line-update &optional all
 Force redisplay of the current buffer's mode line and header line.
 The next redisplay will update the mode line and header line based on
-the latest values of all relevant variables.
+the latest values of all relevant variables.  With optional
+non-@code{nil} @var{all}, force redisplay of all mode lines and header
+lines.
 
 This function also forces recomputation of the menu bar menus
 and the frame title.