What is the purpose of XBTEUR.d tradable pair?

5

1

On Kraken exchange fee page are listed tradable pairs. Some of them come with an extra suffix *.d, e.g. there are listed fees for together for XBTEUR and XBTEUR.d.

What is the purpose of these pairs? How do the fees are calculated? This information seem to be missing from the page.

The difference between XBTEUR and XBTEUR.d is that the former is on the "regular" kraken exchange whereas the latter is on a dark pool.