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Each profile keeps its own answers, history and ability, and they follow you to any device where you pick the same profile.
Leaving it changes nothing: it stays in this browser and you can be asked again from another profile.
Discard closes the session. Answers you already gave stay in your history and ability.
All four NCE/SEE domains at blueprint weights, mixed across topics, adapting to you as you go.
Pick topics and levels. Adaptive climbs the levels as you go; Random mixes the levels you picked like a regular quiz.
Hover a level to see what it means.
System follows your device's light or dark setting.
Every question becomes available again, as if you had never seen it. Your answers, history and ability stay.
Puts your ability back to average (0). Past sessions and answers stay in History.