INCOTERMS(international commercial terms) are most frequently listed by category. Terms beginning with F refer to shipments where the primary cost of shipping is not paid for by the seller. Terms beginning with C deal with shipments where the seller pays for shipping. E-terms occur when a seller's responsibilities are fulfilled when goods are ready to depart from their facilities. D terms cover shipments where the shipper/seller's responsibility ends when the goods arrive at some specific point.