The Order Book widget displays all of your working orders. In the Order Book, you can view the status of your working orders, cancel orders, modify orders, place orders on hold, apply algos to orders, and retrieve the historical activity of an order.
With the Order Book widget, you can:
You can view information for orders and block trades in the Order Book widget, as well as the Audit Trail and Fills widgets.
All exchange-provided Trade Reference IDs appear in the ExchangeOrderID column as shown in the image below.