| RKeeper.OrderCreationPreferences | settings for creating an order at the cash register and receiving a menu |
| RKeeper.RefServer.TcpConnetion | connection to ref server. Required to record additional order properties, such as courier phone number and guest data |
| Kestrel | is responsible for the order acceptance form at the checkout. By default, it is configured for port 5050. The host is specified in the OrderConfirmationHost parameter of the RKeeper.OrderCreationPreferences block. |