Shipping—

1. (a) By land (domestic shipments), use a bill of lading;
2. (b) By land (international shipments), use of the optional GBL is permitted but not required;
3. (c) By ocean, use an ocean bill of lading, when suitable, along with the GBL (only for door-to-door movements); and
4. (d) By air, use a bill of lading.