diff -r 943d323cb4b8 Doc/library/stdtypes.rst
--- a/Doc/library/stdtypes.rst	Wed Jul 27 07:39:27 2011 +0200
+++ b/Doc/library/stdtypes.rst	Wed Jul 27 17:41:36 2011 +0300
@@ -1549,6 +1549,9 @@
 | ``'s'``    | String (converts any Python object using            |       |
 |            | :func:`str`).                                       |       |
 +------------+-----------------------------------------------------+-------+
+| ``'a'``    | String (converts any Python object using            |       |
+|            | :func:`ascii`).                                     |       |
++------------+-----------------------------------------------------+-------+
 | ``'%'``    | No argument is converted, results in a ``'%'``      |       |
 |            | character in the result.                            |       |
 +------------+-----------------------------------------------------+-------+