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When Alt – F7 keys are used again on a line, all the additional discount lines will be opened again.
If discounts to be applied as additional discount are to be net discounts, the "Net Discount" box at the top is marked. Net discount is the discount applied without including VAT. The figure entered in the Assumed VAT Rate field is used to calculate how much of the VAT to be calculated on the discount will be added to the Line VAT.