--- a/scripts/control/gram.m
+++ b/scripts/control/gram.m
@@ -1,20 +1,20 @@
-# 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, 59 Temple Place, Suite 330, Boston, MA 02111 USA. 
+## 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, 59 Temple Place, Suite 330, Boston, MA 02111 USA. 
 
 ## -*- texinfo -*-
 ## @deftypefn {Function File } { @var{m} =} gram (@var{a}, @var{b})
@@ -25,8 +25,9 @@
 ## @end deftypefn
 
 function m = gram(a,b)
-  # Written by A. S. Hodel 
 
-  # let lyap do the error checking...
+  ## Written by A. S. Hodel 
+
+  ## let lyap do the error checking...
   m = lyap(a,b*b');
 endfunction