-This code is used by other code in the pyutils library; for example,
-when using :file:`argparse_utils.py` to pass an argument of type
-datetime it allows the user to use free form English expressions.
+This code is used by other code in the pyutils library such as
+:meth:`pyutils.argparse_utils.valid_datetime`,
+:meth:`pyutils.argparse_utils.valid_date`,
+:meth:`pyutils.string_utils.to_datetime`
+and
+:meth:`pyutils.string_utils.to_date`. This means any of these are
+also able to accept and recognize this larger set of date expressions.