def match(self, p_todo):
        """
        Returns True when p_todo doesn't have a tag to mark it as hidden.
        """
        for my_tag in config().hidden_item_tags():
            my_values = p_todo.tag_values(my_tag)
            for my_value in my_values:
                if not my_value in (0, '0', False, 'False'):
                    return False

        return True
Returns True when p_todo doesn't have a tag to mark it as hidden.