Use the List Processor/Mailer Information screen (C1CPID60) to define the list code and client code information in your input file. You can also enter the date you received your file. On this screen you can tell CODE-1 Plus to print the name or ID of your current name-and-address input file in box B4 of the USPS Form 3553 or to print the number of name-and-address lists you used to produce your current mailing in box B5. You can also tell CODE-1 Plus to print the mailer's name and address on the USPS Form 3553 in box D2, specify a client code, and specify the date when you received your input file.