An exporter in Denver sold goods to a distributor in Brazil (and many other countries). After a long and satisfactory relationship with their Brazilian distributor, they agreed on payment terms of 150 days on an accepted draft basis.
After shipment, the exporter's bank sent the documents to a bank in Brazil with instructions to release the documents after the buyer accepted the 150-day draft thereby obligating themselves to pay it at maturity. Some traders refer to this method of payment as a documentary collection with a time draft, sometimes as Documents Against Acceptance, abbreviated DAA or D/A.
For years this relationship worked well and the distributor always met their obligations.