@staticmethod<EOL><INDENT>def autocomplete_search_fields():<DEDENT>
return ("<STR_LIT>","<STR_LIT>")<EOL>
This is necessary for the autocomplete field offered by the Grappelli skin;
            it says that autocompletion is done on the 'term' field and checks whether
            what has been typed by the user appears anywhere in a known fact term
            (rather than, e.g., only completing terms that start with what the user has typed.)
            Do not forget to add the '@staticmethod' tag for this function if using
            the same trick for other models.