--- a/scripts/control/h2norm.m
+++ b/scripts/control/h2norm.m
@@ -1,20 +1,20 @@
-# Copyright (C) 1996,1998 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) 1996,1998 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{retval} =} h2norm(@var{sys})
@@ -25,10 +25,10 @@
 ##  H2 and Hinf Control Problems", IEEE TAC August 1989
 ## @end deftypefn
 
+function h2gain = h2norm(sys)
 
-function h2gain = h2norm(sys)
-  # A. S. Hodel Aug 1995
-  # updated for system data structure by John Ingram November 1996
+  ## A. S. Hodel Aug 1995
+  ## updated for system data structure by John Ingram November 1996
 
   if((nargin != 1))
     usage("h2gain = h2norm(sys)");
@@ -41,7 +41,7 @@
     warning("h2norm: unstable input system; returning Inf");
     h2gain = Inf;
   else
-    # compute gain
+    ## compute gain
     [a,b,c,d] = sys2ss(sys);
     if(dflg)
       M = dlyap(a,b*b');