; (iii) on regulations that are limited to the organization, management, or personnel matters of a Federal agency; or (iv) belonging to a category of guidance documents exempted by the Administrator of the Office of Information and Regulatory Affairs. . 3. Definition of rule to include significant guidance for purposes of rulemaking Section 551(4) of title 5, United States Code, is amended by inserting before the semicolon at the end the following: , as well as significant guidance (as such term is defined in section 804(5)) .