/* Nil or a symbol naming the window system under which emacs is
running ('x is the only current possibility) */
-extern Lisp_Object Vwindow_system;
+extern Lisp_Object Vinitial_window_system;
/* Version number of X windows: 10, 11 or nil. */
EXFUN (Fwindow_dedicated_p, 1);
extern int window_height P_ ((Lisp_Object));
extern int window_width P_ ((Lisp_Object));
+EXFUN (Fwindow_full_width_p, 1);
extern void set_window_height P_ ((Lisp_Object, int, int));
extern void set_window_width P_ ((Lisp_Object, int, int));
extern void change_window_heights P_ ((Lisp_Object, int));
extern int minibuf_level;
-/* true iff we should redraw the mode lines on the next redisplay. */
+/* true if we should redraw the mode lines on the next redisplay. */
extern int update_mode_lines;