How to discount a line on a sale

**Assumptions: Selling screen is present.**
Step	Keys to press	Result
1		Use the arrow keys to highlight the line and discount column on the selling screen.
2		Press the enter key to begin. The discount will highlight in yellow.
3	15	Enter the discount percentage.
4		Press the enter key to complete the discount. A 15 percent discount will be applied to the current line.