{
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  "sourcePath": "src/main/data/docs",
  "docId": "RFC5137",
  "document": {
    "abstract": "There are a number of circumstances in which an escape mechanism is needed in conjunction with a protocol to encode characters that cannot be represented or transmitted directly. With ASCII coding, the traditional escape has been either the decimal or hexadecimal numeric value of the character, written in a variety of different ways. The move to Unicode, where characters occupy two or more octets and may be coded in several different forms, has further complicated the question of escapes. This document discusses some options now in use and discusses considerations for selecting one for use in new IETF protocols, and protocols that are now being internationalized. This document specifies an Internet Best Current Practices for the Internet Community, and requests discussion and suggestions for improvements.",
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      "confidence": "high",
      "note": "Parsed from RFC index XML abstract",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5137/",
      "updated": "2026-10-16T18:53:45.501Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "authors": [
      {
        "name": "Dr. John C. Klensin"
      }
    ],
    "authors$meta": {
      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5137/",
      "updated": "2026-10-16T18:53:45.501Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "docId": "RFC5137",
    "docId$meta": {
      "confidence": "high",
      "note": "Derived from RFC number or Datatracker identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5137/",
      "updated": "2026-10-16T18:53:45.501Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "docLabel": "IETF RFC 5137",
    "docLabel$meta": {
      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5137/",
      "updated": "2026-10-16T18:53:45.501Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "docNumber": "5137",
    "docNumber$meta": {
      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5137/",
      "updated": "2026-10-16T18:53:45.501Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "docTitle": "ASCII Escaping of Unicode Characters",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5137/",
      "updated": "2026-10-16T18:53:45.501Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "docType": "Best Practice",
    "docType$meta": {
      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5137/",
      "updated": "2026-10-16T18:53:45.501Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "doi": "10.17487/RFC5137",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5137/",
      "updated": "2026-10-16T18:53:45.501Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "href": "https://doi.org/10.17487/RFC5137",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5137/",
      "updated": "2026-10-16T18:53:45.501Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "keywords": [
      "Internationalization",
      "ASCII",
      "Unicode",
      "UTF-8",
      "Encoding"
    ],
    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5137/",
      "updated": "2026-10-16T18:53:45.501Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "pages": "13",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5137/",
      "updated": "2026-10-16T18:53:45.501Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "publicationDate": "2008-02-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5137/",
      "updated": "2026-10-16T18:53:45.501Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5137/",
      "updated": "2026-10-16T18:53:45.501Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "references": {
      "bibliographic": [
        "INCITS.X3.4.1968",
        "ISO.9899.1999",
        "RFC2277",
        "RFC3492",
        "W3C.charmod",
        "orphan/RFC5137/h:1c7ea06f",
        "orphan/RFC5137/h:10989921",
        "orphan/RFC5137/h:704f7353"
      ],
      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=13 proseBlocks=18 skippedAnchorBlocks=15",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5137/",
        "updated": "2026-10-16T18:53:45.501Z",
        "version": "extractDocs.js@commit:a6ae1efef02e"
      },
      "normative": [
        "ISO.10646.2003",
        "RFC2119",
        "RFC3629",
        "RFC5234",
        "UNICODE.STD.5.0"
      ],
      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5137/",
        "updated": "2026-10-16T18:53:45.501Z",
        "version": "extractDocs.js@commit:a6ae1efef02e"
      }
    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc5137/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5137/",
      "updated": "2026-10-16T18:53:45.501Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
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    "status": {
      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5137/",
        "updated": "2026-10-16T18:53:45.501Z",
        "version": "extractDocs.js@commit:a6ae1efef02e"
      },
      "errataExist": true,
      "errataExist$meta": {
        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5137/",
        "updated": "2026-10-16T18:53:45.501Z",
        "version": "extractDocs.js@commit:a6ae1efef02e"
      },
      "errataUrl": [
        "https://www.rfc-editor.org/errata/rfc5137",
        "https://www.rfc-editor.org/errata_search.php?rfc=5137",
        "https://www.rfc-editor.org/rfc/inline-errata/rfc5137.html"
      ],
      "errataUrl$meta": {
        "confidence": "high",
        "note": "Parsed from errata links on RFC/Datatracker pages",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5137/",
        "updated": "2026-10-16T18:53:45.501Z",
        "version": "extractDocs.js@commit:a6ae1efef02e"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5137/",
        "updated": "2026-10-16T18:53:45.501Z",
        "version": "extractDocs.js@commit:a6ae1efef02e"
      },
      "statusNote": "Best Current Practice",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5137/",
        "updated": "2026-10-16T18:53:45.501Z",
        "version": "extractDocs.js@commit:a6ae1efef02e"
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      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5137/",
        "updated": "2026-10-16T18:53:45.501Z",
        "version": "extractDocs.js@commit:a6ae1efef02e"
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}