Terms wording on invoice

Hi, 

I'm currently setting up our invoice template. We offer customers a discount for early payment, which I see you can setup in the "Terms" section. However, when the invoice is generated it lists the information in shorthand

eg. 10%14 Net 28. Instead of stating "discount amount", "discount expires after ... days" etc. 

The shorthand version is simply not clear enough for customers to understand. Is there a way to include the full explanation in the terms generator?

Thanks,