IBillCheque

The most frequently customised document of the till. In a template it is Model: the order sits in Model.Order, the shared facts in Model.CommonInfo.

One root serves three scenarios, and a template has to tell them apart:

• an ordinary bill — RepeatBillNumber is zero;
• a reprint — RepeatBillNumber is above zero and holds the repeat number, which is printed in the heading;
• an intermediate receipt for items added to a served order — AdditionalServiceChequeInfo is filled. This is not a styling variation but a different document: its own heading, only the added items, its own totals. Check that field before anything else.

The document is non-fiscal, so it carries no till block (shift, cashier, fiscal receipt) — if you need those, you are looking at the wrong document. The fiscal registrar requisites are still available in DefaultCashRegister: that field exists for custom templates, and the stock one never prints it.

A delivery order gets a document of its own, IDeliveryBillCheque, carrying the address, the customer and the courier.