What is the blue dot for?
When I finish a "practice session", there is a blue dot at the bottom center of the screen, to the left of the "practice again" and " continue" buttons. When I hover my mouse pointer over it, the pointer changes to a pointing hand icon, but nothing happens when I try to click it.
Sometimes there are multiple pages in the session end screen - usually if you earn lingots or strengthen a skill. The blue dots indicate what page you're on, but since you only have 1 page, you're only seeing 1 dot.