; (ii) improve the net financial position of the Postal Service; and (iii) do not cause unreasonable disruption in the marketplace, consistent with subsection (c)(13)(B); ; and (B) by adding at the end the following: (4) Group of functionally equivalent agreements defined For purposes of paragraph (1)(B), a group of functionally equivalent agreements shall consist of all service agreements that are functionally equivalent to each other within the same market-dominant product, but shall not include agreements within an experimental product. . (4) Technical and conforming amendments Section 3622 of title 39, United States Code, is amended— (A) in subsection (a), by striking , within 18 months after the date of enactment of this section,