| http://www.w3.org/ns/prov#value | - (4)(A) Except as specified in subparagraph (B), rates of postage for a class of mail or kind of mailer under former section 4358 (d) or (e) of this title shall be established so that postage on each mailing of such mail shall be as nearly as practicable 5 percent lower than the postage for a corresponding regular-rate category mailing.
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