{
  "title": "Factorial Calculator",
  "origin_url": "https://archive.computerhistory.org/resources/text/Knuth_Don_X4100/PDF_index/k-9-pdf/k-9-u2769-JOVIAL-manuals.pdf",
  "license_guess": null,
  "code_sha256": "825f22997fb536100abef5e60e9b767ffc58f3d0eaef8eacd288d0ed68bf964c",
  "added_at": "2026-02-11T10:30:00Z"
}