2 files changed, 6 insertions, 1 deletions

diff --git a/doc/lispref/ChangeLog b/doc/lispref/ChangeLog
index 438d825b3bd..4809e1f231b 100644
--- a/doc/lispref/ChangeLog
+++ b/doc/lispref/ChangeLog
@@ -1,7 +1,11 @@
 2008-12-20  Eli Zaretskii  <eliz@gnu.org>
 
+        * os.texi (Startup Summary): Add xref to documentation of
+        `initial-window-system'.
+
         * display.texi (Window Systems): Document `window-system' the
         function.  The variable `window-system' is now frame-local.
+        Document `initial-window-system'.
 
 2008-12-19  Martin Rudalics  <rudalics@gmx.at>
 
diff --git a/doc/lispref/os.texi b/doc/lispref/os.texi
index 8c3d680fad4..a5cf70160dc 100644
--- a/doc/lispref/os.texi
+++ b/doc/lispref/os.texi
@@ -80,7 +80,8 @@ that Emacs initialization is in progress.
 @vindex window-system-initialization-alist
 @item
 It loads the initialization library for the window system specified by
-the variable @code{initial-window-system}.  This library's name is
+the variable @code{initial-window-system} (@pxref{Window Systems,
+initial-window-system}).  This library's name is
 @file{term/@var{windowsystem}-win.el}, where @var{windowsystem} is the
 value of @code{initial-window-system}.  From that library, it calls
 the appropriate initialization function.  The initialization function