As used on containers in foreign trade, a symbol or initials shown together with the port of importation and the final destination, if different. Example: A.G. y Cia., Bogotá via Barranquilla. Marks are registered at appropriate customs houses; they also appear on bills of lading and invoices. In domestic trade, it is common to mark containers with the name and address of the recipient, but this is rarely done in foreign trade.