* display.texi (Window Systems): Add ns to the list.

doc/lispref/ChangeLog

+2009-06-24  Chong Yidong  <cyd@stupidchicken.com>
+
+	* display.texi (Window Systems): Add ns to the list.
+
 2009-06-21  Chong Yidong  <cyd@stupidchicken.com>
 
 	* Branch for 23.1.

doc/lispref/display.texi

@@ -5837,6 +5837,9 @@ for displaying the frame.  The possible values are
 Emacs is displaying the frame using X.
 @item w32
 Emacs is displaying the frame using native MS-Windows GUI.
+@item ns
+Emacs is displaying the frame using the Nextstep interface (used on
+GNUstep and Mac OS X).
 @item pc
 Emacs is displaying the frame using MS-DOS direct screen writes.
 @item nil