{
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  "document": {
    "abstract": "In advanced mail filtering rule sets, it is useful to keep state or configuration details across rules. This document updates the Sieve filtering language (RFC 5228) with an extension to support variables. The extension changes the interpretation of strings, adds an action to store data in variables, and supplies a new test so that the value of a string can be examined. [STANDARDS-TRACK]",
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    "authors": [
      {
        "name": "Kjetil Torgrim Homme"
      }
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      "confidence": "high",
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      "updated": "2026-10-14T16:13:34.430Z",
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      "confidence": "high",
      "note": "Derived from RFC number or Datatracker identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5229/",
      "updated": "2026-10-14T16:13:34.430Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
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    "docLabel": "IETF RFC 5229",
    "docLabel$meta": {
      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5229/",
      "updated": "2026-10-14T16:13:34.430Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "docNumber": "5229",
    "docNumber$meta": {
      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5229/",
      "updated": "2026-10-14T16:13:34.430Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "docTitle": "Sieve Email Filtering: Variables Extension",
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      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5229/",
      "updated": "2026-10-14T16:13:34.430Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
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    "docType": "Standard",
    "docType$meta": {
      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5229/",
      "updated": "2026-10-14T16:13:34.430Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "doi": "10.17487/RFC5229",
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      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5229/",
      "updated": "2026-10-14T16:13:34.430Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "href": "https://doi.org/10.17487/RFC5229",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5229/",
      "updated": "2026-10-14T16:13:34.430Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "pages": "11",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5229/",
      "updated": "2026-10-14T16:13:34.430Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "publicationDate": "2008-01-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5229/",
      "updated": "2026-10-14T16:13:34.430Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5229/",
      "updated": "2026-10-14T16:13:34.430Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "references": {
      "bibliographic": [
        "RFC5235",
        "orphan/RFC5229/h:96ac47f1",
        "orphan/RFC5229/h:d8eb6067"
      ],
      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=8 proseBlocks=11 skippedAnchorBlocks=9",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5229/",
        "updated": "2026-10-14T16:13:34.430Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
      "normative": [
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        "RFC2119",
        "RFC5231",
        "RFC5228",
        "RFC3629"
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      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5229/",
        "updated": "2026-10-14T16:13:34.430Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
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    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc5229/",
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      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
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      "updated": "2026-10-14T16:13:34.430Z",
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      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5229/",
        "updated": "2026-10-14T16:13:34.430Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
      "amendedBy": [
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      "amendedBy$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5229/",
        "updated": "2026-10-14T16:13:34.430Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
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        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5229/",
        "updated": "2026-10-14T16:13:34.430Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
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      "errataExist": true,
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        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5229/",
        "updated": "2026-10-14T16:13:34.430Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
      "errataUrl": [
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        "https://www.rfc-editor.org/errata_search.php?rfc=5229",
        "https://www.rfc-editor.org/rfc/inline-errata/rfc5229.html"
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      "errataUrl$meta": {
        "confidence": "high",
        "note": "Parsed from errata links on RFC/Datatracker pages",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5229/",
        "updated": "2026-10-14T16:13:34.430Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
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      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5229/",
        "updated": "2026-10-14T16:13:34.430Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
      "statusNote": "Proposed Standard",
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        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5229/",
        "updated": "2026-10-14T16:13:34.430Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
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      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5229/",
        "updated": "2026-10-14T16:13:34.430Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
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