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--- a/src/utils/x11mon.h
+++ b/src/utils/x11mon.h
@@ -1,6 +1,21 @@
 #ifndef _X11MON_H_INCLUDED_
 #define _X11MON_H_INCLUDED_
-/* @(#$Id: x11mon.h,v 1.1 2006-12-23 12:23:15 dockes Exp $  (C) 2006 J.F.Dockes */
+/* Copyright (C) 2006 J.F.Dockes
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the
+ *   Free Software Foundation, Inc.,
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
 
 /** Poll X11 server status and connectivity */
 extern bool x11IsAlive();