--- a/setup.py
+++ b/setup.py
@@ -1,3 +1,10 @@
+
+'''
+This software is licensed under the GPL (GNU General Public License) version 2
+as it appears here: http://www.gnu.org/copyleft/gpl.html
+It is also included with this archive as `gpl.txt <gpl.txt>`_.
+'''
+
 # setup.py
 # to make a binary for windows from source...
 # 1. download and install the py2exe utility from: