(Dialog Boxes): HEADER argument to `x-popup-dialog' is optional.

diff --git a/lispref/frames.texi b/lispref/frames.texi
index 0d716c65d98e2f290b8906c1578e31316325a322..dc5257dd1aa9653d763b5876f6f73df557be7ab5 100644 (file)
--- a/lispref/frames.texi
+++ b/lispref/frames.texi
@@ -1445,7 +1445,7 @@ force the user to acknowledge important information.  The functions
 @code{y-or-n-p} and @code{yes-or-no-p} use dialog boxes instead of the
 keyboard, when called from commands invoked by mouse clicks.
 
-@defun x-popup-dialog position contents header
+@defun x-popup-dialog position contents &optional header
 This function displays a pop-up dialog box and returns an indication of
 what selection the user makes.  The argument @var{contents} specifies
 the alternatives to offer; it has this format: