{
  "archive": "pdfa3b",
  "metadata": {
    "title": "Records office cover sheet RO-2026-004318",
    "author": "Olivier Pons",
    "subject": "An archival sheet carrying metadata of its own",
    "producer": "hqf-pdf",
    "created": "2026-07-14T09:30:00+02:00",
    "schemas": [
      {
        "name": "Records Office Schema",
        "namespace": "https://hqf-pdf.example/ns/records/1.0/",
        "prefix": "rec",
        "properties": [
          {
            "name": "Reference",
            "value": "RO-2026-004318",
            "description": "The reference the records office files the dossier under",
            "value_type": "text",
            "category": "external"
          },
          {
            "name": "Department",
            "value": "Planning",
            "description": "The department the dossier came from",
            "value_type": "text",
            "category": "external"
          },
          {
            "name": "RetainUntil",
            "value": "2056-12-31T23:59:59+01:00",
            "description": "The date the dossier may be destroyed, and not before",
            "value_type": "date",
            "category": "internal"
          },
          {
            "name": "Classification",
            "value": "Public",
            "description": "How widely the dossier may be circulated",
            "value_type": "text",
            "category": "external"
          },
          {
            "name": "Sheets",
            "value": "1",
            "description": "How many sheets the dossier holds",
            "value_type": "integer",
            "category": "internal"
          }
        ]
      }
    ]
  },
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        "Records office cover sheet"
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      },
      "content": [
        "The fields below are the records office's own. No part of the PDF standard knows what a retention date is, so the file explains itself: each field arrives in the metadata packet with its name, the way it is to be read, who it is written for, and what it means. An archival validator accepts them on that description, and refuses metadata that turns up without one."
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      "leading": 15.0,
      "align": "justify"
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      },
      "content": [
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      ],
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      "font_size": 12.0
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      },
      "content": [
        "Reference\nDepartment\nRetainUntil\nClassification\nSheets"
      ],
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      "font_size": 11.0,
      "leading": 17.0
    },
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      },
      "content": [
        "RO-2026-004318\nPlanning\n2056-12-31T23:59:59+01:00\nPublic\n1"
      ],
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    },
    {
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        "ury": 503.6
      },
      "content": [
        "What the packet declares of each of them"
      ],
      "font": "DejaVuSans",
      "font_size": 12.0
    },
    {
      "type": "text",
      "rect": {
        "llx": 222.0,
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        "ury": 481.2
      },
      "content": [
        "Text · external · The reference the records office files the dossier under\nText · external · The department the dossier came from\nDate · internal · The date the dossier may be destroyed, and not before\nText · external · How widely the dossier may be circulated\nInteger · internal · How many sheets the dossier holds"
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      "content": [
        "Every value above is written twice: once on this page, and once in the packet a machine reads, under the prefix the schema names. Reading the file's metadata gives back this table, field for field."
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