--- a/gmm_obj.m
+++ b/gmm_obj.m
@@ -1,4 +1,5 @@
-# Copyright (C) 2003,2004  Michael Creel michael.creel@uab.es
+# Copyright (C) 2003,2004,2005  Michael Creel michael.creel@uab.es
+# under the terms of the GNU General Public License.
 # 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -13,14 +14,16 @@
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- 
 
-# The GMM objective function
-# This is scaled so that it converges to a
-# finite number. To get the chi-square specification
+
+# The GMM objective function, for internal use by gmm_estimate
+# This is scaled so that it converges to a finite number.
+# To get the chi-square specification
 # test you need to multiply by n (the sample size)
 function obj_value = gmm_obj(theta, data, weight, moments, momentargs)
+
 	m = average_moments(theta, data, moments, momentargs);
+	
 	obj_value = m' * weight *m;
 
 	if (((abs(obj_value) == Inf)) || (isnan(obj_value)))