From 4267d515096e7f1699c5545a5f83e14330178128 Mon Sep 17 00:00:00 2001
From: Eli Zaretskii <eliz@gnu.org>
Date: Sat, 20 Dec 2008 13:52:30 +0000
Subject: [PATCH] (Window Systems): Document `initial-window-system'.

---
 doc/lispref/display.texi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/doc/lispref/display.texi b/doc/lispref/display.texi
index 5995d4cbbaa..25b29b2ec01 100644
--- a/doc/lispref/display.texi
+++ b/doc/lispref/display.texi
@@ -5660,6 +5660,11 @@ Emacs is displaying the frame on a character-based terminal.
 @end table
 @end defvar
 
+@defvar initial-window-system
+This variable holds the value of @code{window-system} used for the
+first frame created by Emacs during startup.
+@end defvar
+
 @defun window-system &optional frame
 This function returns a symbol whose name tells what window system is
 used for displaying @var{frame} (which defaults to the currently
-- 
2.39.2