Ensure this file is not a part of GNU Emacs

Author: keenban

sign.el

@@ -8,6 +8,8 @@
 ;; Version: 0.1.0
 ;; Package-Requires: ((emacs "27.1"))
 
+;; This file is NOT a part of GNU Emacs.
+
 ;; 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 3 of the License, or