--- a/scripts/control/sysmin.m
+++ b/scripts/control/sysmin.m
@@ -1,3 +1,23 @@
+# Copyright (C) 1996 Auburn University. All rights reserved.
+#
+# This file is part of Octave.
+#
+# Octave 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, or (at your option) any
+# later version.
+#
+# Octave 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 Octave; see the file COPYING.  If not, write to the Free
+# Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+#
+# Written by A. S. Hodel a.s.hodel@eng.auburn.edu
+
 function [retsys,nc,no,cflg,oflg] = sysmin(sys,flg);
   # [retsys,nc,no] = sysmin(sys{,flg});
   # return a minimal (or reduced order) system