--- a/scripts/polynomial/deconv.m
+++ b/scripts/polynomial/deconv.m
@@ -1,5 +1,25 @@
+# Copyright (C) 1995 John W. Eaton
+# 
+# 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.
+
 function [b, r] = deconv (y, a)
 
+# usage: deconv (y, a)
+#
 # Deconvolve two vectors.
 #
 # [b, r] = deconv (y, a) solves for b and r such that 
@@ -12,13 +32,10 @@
 # SEE ALSO: conv, poly, roots, residue, polyval, polyderiv,
 # polyinteg 
 
-# Author:
-#  Tony Richardson
-#  amr@mpl.ucsd.edu
-#  June 1994
+# Written by Tony Richardson (amr@mpl.ucsd.edu) June 1994.
 
   if (nargin != 2)
-    usage (" deconv (y,a)");
+    usage ("deconv (y, a)");
   endif
 
   if (is_matrix (y) || is_matrix (a))