It seems as though hitting one will mean you don't get to negotiate, and hitting the other means you do. I may be wrong - or there may be some other thing I'm doing wrong.
In any case, please could a simple 'space: continue'-like instruction be added to the screen?
Thanks.
'Greetings to the noble dwarves of WhereverYouAre from the humans of WhereverWe'reFrom. We would like to discuss our requirements in this trade agreement'
Then you press whichever key you think of, and it should go to the screen described at http://dwarf.lendemaindeveille.com/index.php/Trade_agreements
If I recall correctly, they do it in sections, with one of those introduction screens to each section:
1. What they want
2. Confirmation of what they want
3. What you want
4. Confirmation of what you want
This year, I got four introduction screens, but only screens 2, 3 and 4.
I think I flubbed it this year. AGAIN.