2to3 can also refactor doctests. To enable this mode, use the :option:`-d`
-flag. Note that *only* doctests will be refactored.
+flag. Note that *only* doctests will be refactored. This also doesn't require
+the module to be valid Python. For example, doctest like examples in a reST
+document could also be refactored with this option.
The :option:`-v` option enables the output of more information on the