--- a/scripts/linear-algebra/rank.m
+++ b/scripts/linear-algebra/rank.m
@@ -1,34 +1,35 @@
-# Copyright (C) 1996 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, 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+### Copyright (C) 1996 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, 59 Temple Place - Suite 330, Boston, MA
+### 02111-1307, USA.
 
 function retval = rank (A, tol)
 
-# usage: rank (a, tol)
-#
-# Return the rank of the matrix a.  The rank is taken to be the number
-# of singular values of a that are greater than tol.
-#
-# If the second argument is omitted, it is taken to be
-#
-#   tol =  max (size (a)) * sigma (1) * eps;
-#
-# where eps is machine precision and sigma is the largest singular
-# value of a.
+  ## usage: rank (a, tol)
+  ##
+  ## Return the rank of the matrix a.  The rank is taken to be the number
+  ## of singular values of a that are greater than tol.
+  ##
+  ## If the second argument is omitted, it is taken to be
+  ##
+  ##   tol =  max (size (a)) * sigma (1) * eps;
+  ##
+  ## where eps is machine precision and sigma is the largest singular
+  ## value of a.
 
   if (nargin == 1)
     sigma = svd (A);