diff -r 4e186581fea7 Doc/library/unittest.rst
--- a/Doc/library/unittest.rst	Wed May 01 00:17:45 2013 +0200
+++ b/Doc/library/unittest.rst	Wed May 01 10:36:44 2013 -0400
@@ -1905,6 +1905,11 @@
       if __name__ == '__main__':
           unittest.main(verbosity=2)
 
+   The *defaultTest* argument can either be a single test name or iterable of test 
+   names. If not specified or ``None``, all tests found in *module* or tests passed 
+   via *argv* are run. Tests passed into *argv* take precendence over those passed 
+   via *defaultTest*.
+
    The *argv* argument can be a list of options passed to the program, with the
    first element being the program name.  If not specified or ``None``,
    the values of :data:`sys.argv` are used.