.. efun:: mixed get_extra_wizinfo(object wiz)
  mixed get_extra_wizinfo(string wiz)
  mixed get_extra_wizinfo(int wiz)

  :arg object wiz: the entry of its creator (uid) is used
  :arg string wiz: a creator (aka uid) that names the entry to use
  :arg int wiz: Uses the given wizlist entry (or the default entry, if the number is 0)

  Returns the 'extra' information that was set for the given wizard :arg:`wiz` in the wizlist.

  .. todo:: privilege violation, another example of arg/param form

  The function causes a privilege violation.

  .. seealso:: :efun:`wizlist_info`, :efun:`set_extra_wizinfo`