Tweak page break in display.texi

* doc/emacs/display.texi (Auto Scrolling):
Reword to avoid repetition and improve page break.

doc/emacs/ChangeLog

+2012-04-30  Glenn Morris  <rgm@gnu.org>
+
+	* display.texi (Auto Scrolling):
+	Reword to avoid repetition and improve page break.
+
 2012-04-28  Glenn Morris  <rgm@gnu.org>
 
 	* xresources.texi (Resources):
@@ -9225,7 +9230,7 @@
 ;; coding: utf-8
 ;; End:
 
-  Copyright (C) 1993-1999, 2001-2012  Free Software Foundation, Inc.
+  Copyright (C) 1993-1999, 2001-2012 Free Software Foundation, Inc.
 
   This file is part of GNU Emacs.
 

doc/emacs/display.texi

@@ -260,14 +260,11 @@ placed from the top margin of the window; thus, as with
   These two variables are ignored if either @code{scroll-step} or
 @code{scroll-conservatively} are set to a non-zero value.
 
-  Note that @code{scroll-margin}, described below, limits the amount
-of scrolling so as to put point outside of the top or bottom margin,
-even if aggressive scrolling specifies a fraction @var{f} that is
-larger than the window portion between the top and the bottom margins.
-
 @vindex scroll-margin
   The variable @code{scroll-margin} restricts how close point can come
-to the top or bottom of a window.  Its value is a number of screen
+to the top or bottom of a window (even if aggressive scrolling
+specifies a fraction @var{f} that is larger than the window portion
+between the top and the bottom margins).  Its value is a number of screen
 lines; if point comes within that many lines of the top or bottom of
 the window, Emacs performs automatic scrolling.  By default,
 @code{scroll-margin} is 0.