Recipient Identification Number; Rin Tin Tin; radio inertial; Regulation Identifier Number(assigned by the Regulatory Information Service Center to identify each regulatory action listed in the Unified Agenda and The Regulatory Plan, as directed by Executive Order 12866 (section 4(b)). Additionally, OMB has asked agencies to include RINs in the headings of their Rule and Proposed Rule documents when publishing them in the Federal Register to make it easier for the public and agency officials to track the publication history of regulatory actio ns throughout their development. Alex Lilo)