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Email

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What to write about

Corrections first. If an animation or an answer on this site disagrees with what your runtime actually prints, include the case URL, your runtime and version (e.g. Node 22, Chrome 130), and the output you observed. These reports get fixed fastest — the whole site is built on being checkable.

Also welcome: unclear explanations, case suggestions (the bar: a common, nameable misconception that a step-through animation would actually resolve), accessibility problems, and anything about privacy.

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