Cards

Spaced-repetition study over your graph
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A card is a node, not a parallel pile — every card is generated from an entry in your lexicon, so it can never drift from its source. Review here uses SM-2 spaced repetition (the curve Anki made famous): grade a card and it schedules its own next appearance, so you revisit each idea right as you’re about to forget it.

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How cards work
Four faces, one source
Each node makes a recall card (title → definition), a reverse (definition → title), a cloze (blank a real link in its own sentence), and relational cards over its typed edges. Edit the node and the cards regenerate — they never drift.
Reveal or choose
Study by revealing and self-grading (Again / Hard / Good / Easy), or in multiple-choice mode — where the graph supplies real, plausible-but-wrong distractors from a card's neighbours.
The schedule, not a streak
Grades feed SM-2, which spaces each card further out as you keep getting it right. “Nothing due” means the system is working — there are no flames or broken-streak guilt here.
Bring your own deck
Import Anki (.apkg/.colpkg, images and all) or CSV/Quizlet — your cards become nodes in a lens. Export any lens back out to Anki, Quizlet, or a schedule-carrying backup. Your data is never hostage.