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What cookies are
A cookie is a small text file written to your browser while you visit a site. It lets the site "remember" you — for example, your chosen language or the dark theme.
Cookies are not programs: they cannot run anything on your device and cannot spread viruses. As a rule they hold no directly identifying information.
Alongside cookies, the site may use the browser's local storage (localStorage) — it serves the same purpose of keeping your preferences.
