Order Printer - How to add coupon discount name

[staceyl1171]

I recently downloaded Order Printer and I am just customizing the template.  I want to know which discount code was used on an order.  How do I ask the template to show the name of the discount?

Also wanting to add a line of code that has the price of the invoice BEFORE discounts.  So retail amount.  

Any help is appreciated.

Thank you

Stacey