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  "formatName": "Microsoft Excel for Windows",
  "version": "2007 onwards",
  "formatDescription": "From Microsoft Office 2007 onwards, the core output format of MS Excel has been based on the Office Open XML (OOXML) file format. The ISO standard for OOXML is ISO/IEC DIS 29500. An OOXML file format consists of a compressed zip archive that is designated according to which file type it is. Further detail on OOXML can be found within fmt/189 - Microsoft Office Open XML.",
  "releaseDate": null,
  "binaryFileFormat": "Text",
  "formatNote": null,
  "lastUpdatedDate": "19 Apr 2012",
  "formatProvenance": "This format can be identified via a container signature in DROID version 6 or later. The PRONOM database cannot currently represent container signatures.",
  "formatSourceDate": "28 Oct 2009",
  "formatDisclosure": null,
  "formatEnvironment": null,
  "formatRisk": null,
  "formatAliases": null,
  "formatTypes": "Spreadsheet",
  "formatFamilies": null,
  "identifiers": [
    {
      "identifierText": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
      "identifierType": "MIME"
    },
    {
      "identifierText": "fmt/214",
      "identifierType": "PUID"
    }
  ],
  "internalSignatures": [],
  "externalSignatures": [
    {
      "externalSignature": "xlsx",
      "signatureType": "File extension"
    }
  ],
  "relationships": [
    {
      "relationshipType": "Has lower priority than",
      "relatedFormatID": 2679,
      "relatedFormatName": "XLSX Strict OOXML Spreadsheet",
      "relatedFormatPUID": "fmt/1828"
    },
    {
      "relationshipType": "Is supertype of",
      "relatedFormatID": 1387,
      "relatedFormatName": "Microsoft Excel Non-XML Binary Workbook",
      "relatedFormatPUID": "fmt/595"
    },
    {
      "relationshipType": "Is supertype of",
      "relatedFormatID": 1390,
      "relatedFormatName": "Microsoft Excel Template",
      "relatedFormatPUID": "fmt/598"
    },
    {
      "relationshipType": "Is supertype of",
      "relatedFormatID": 1426,
      "relatedFormatName": "Microsoft Excel Macro-Enabled Template",
      "relatedFormatPUID": "fmt/627"
    },
    {
      "relationshipType": "Is supertype of",
      "relatedFormatID": 1427,
      "relatedFormatName": "Microsoft Excel Macro-Enabled Add-In",
      "relatedFormatPUID": "fmt/628"
    }
  ],
  "supportedBy": [
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  ],
  "developedBy": [
    93
  ],
  "containerSignatures": [
    {
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      "id": "2030",
      "description": "Microsoft Excel OOXML",
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              "reference": "BOFoffset"
            }
          ]
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      ]
    },
    {
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      "description": "Microsoft Excel OOXML (little endian)",
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    {
      "containerType": "ZIP",
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}