diff -r dd9d057465c1 -r fac67f0bfbb2 mercurial/commands.py
--- a/mercurial/commands.py	Tue Feb 23 23:10:01 2010 -0600
+++ b/mercurial/commands.py	Wed Feb 24 11:04:56 2010 -0300
@@ -3334,7 +3334,8 @@
      _('do not prompt, assume \'yes\' for any required answers')),
     ('q', 'quiet', None, _('suppress output')),
     ('v', 'verbose', None, _('enable additional output')),
-    ('', 'config', [], _('set/override config option')),
+    ('', 'config', [],
+     _('set/override config option (use \'section.name=value\')')),
     ('', 'debug', None, _('enable debugging output')),
     ('', 'debugger', None, _('start debugger')),
     ('', 'encoding', encoding.encoding, _('set the charset encoding')),