This part sets forth the requirements and procedures for participation in the Automated Broker Interface (ABI), for the clearance of imported merchandise under appraisement and informal entries, and under electronic entry filing and under Remote Location Filing (RLF). All requirements and procedures set forth in this part are in addition to the general requirements and procedures for all entries set forth in part 141 of this chapter. More specific requirements and procedures are set forth elsewhere in this chapter; for example, part 145 concerns importations by mail and part 10 concerns merchandise conditionally free of duty or subject to a reduced rate.