Is there a merge field code for Discount amounts? How about surcharges?

I have a repeat guest discount and have set up the code and amount and confirmed it is working as desired on the quote. I also have surcharges for dogs, and those are showing up on the quote.
However, I include the pricing details (quote) in my rental agreement. I found merge fields for everything except the surcharges and discount. Where can I find these merge fields?

Ah - yes, that's what I'd like to do. I'll give that a try. Thanks for the suggestion!