In the middle of being rung up at point-of-sale, a customer may realize that he or she has forgotten to purchase a particular item(s). If this occurs, the clerk can "suspend" the transaction, and move on to ringing up another customer. Then, once the customer returns from retrieving the additional item(s) he or she needs, the clerk can recall the suspended transaction, make any additions or changes to it, and complete the sale.
When you create a suspended transaction, the quantities on it are "committed" until the sale is completed (or deleted). Committed Quantity is used by the system to calculate the quantity available of an item (quantity on hand - committed quantity = quantity available).
Although different from Orders in that they are purged when you run the Open Orders/Pick Tickets Report (ROO) with option S (which should be run in your end-of-day queue), suspended transactions are otherwise the same as Orders. Therefore, suspended transactions display as Orders in the POS document viewer.
Security bit 620 controls the ability to suspend a transaction.