Restaurant
Restaurant POS software
Food, drink, and delivery on one counter. POS for the table. Sales tax on the invoice.

POS
The order is the bill. Food, drink, dessert, and delivery stay in their own categories.
Stock
What the kitchen uses can leave stock with the sale. A purchase order covers what comes in.
Sales tax
The invoice carries the tax. Service is billed as served.
No barcode required
A restaurant does not need a scanner. The preset leaves barcode off.