arXiv: помечать статьи как прочитанные

// Mark papers as "read" once you click their PDF link, dim them in listings
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    apply();
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  document.addEventListener('click', function (e) {
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    markId(extractId(a.getAttribute('href') || ''));
  }, true);
  function apply() {
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      if (!id || !read[id]) { return; }
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      if (row && !row.dataset.jzArxRead) {
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        row.style.opacity = '0.55';
        row.style.filter = 'grayscale(0.5)';
        var tag = document.createElement('span');
        tag.textContent = ' ✓ read';
        tag.style.cssText = 'color:#0a7c3a;font-weight:700;font-size:12px;margin-left:6px;';
        a.appendChild(tag);
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    });
  }
  apply();
  new MutationObserver(function () {
    clearTimeout(window.__jzArxRead);
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  }).observe(document.body, { childList: true, subtree: true });
})();