They are called: invoices, packing lists/slips/sheets (manifests), content lists, pick tickets, arrival acknowledgement forms/reports of many types (e.g. MSDS, damaged goods, returned goods, detailed/summary, etc.), import/export, delivery, bill of lading (BOL), etc. These documents are usually the contracts between the consignee and the consignor, so they are very important for both parties and any intermediary, like a third party logistics company (3PL) and governments. Document handling within logistics, supply chain management and distribution centers is usually performed manual labor or semi-automatically using bar code scanners, software and tabletop laser printers.