Um, Baltic, Swedish, Russian?
When I say I don't understand the language used, I'm speaking as a native English speaker, my ancestors are largely from England and Scotland, and I'm native born American. It's just not clear.
I'm getting the hang of it after a year, mostly because there is a bit of lingo involved in the data doctors work - in English - that has not always been clear to me, and the help index is not entirely useful to that end (IMO).