--- a/scripts/elfun/coth.m
+++ b/scripts/elfun/coth.m
@@ -1,6 +1,25 @@
+### 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 w = coth (z)
   
-# coth (z):  compute the hyperbolic cotangent for each element of z.
+  ## coth (z):  compute the hyperbolic cotangent for each element of z.
   
   if (nargin != 1)
     usage ("coth (z)");