The Front
Per-domain horizontal swim-lanes. Common words sit on the left, rarer vocab on the right. Each row's gold marker is where your frontier sits in that domain - everything to the right is unexplored territory.
Domains—
Known—
Frontier—
Total mapped—
All domains
mastered
consolidating
learning
exposed
decaying
unknown
frontier marker
← easy / common · rare / unexplored →
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