{
  "fileFormatID": 684,
  "formatName": "Microsoft Excel 97-2003 Workbook (xls)",
  "version": "8 & 8X",
  "formatDescription": "The Binary Interchange File Format (BIFF) is a spreadsheet file format developed by Microsoft. BIFF 8 is a native file format of Microsoft Excel 97. The format is proprietary and Microsoft does not make details of its structure public. The information here is derived primarily from OpenOffice.org's reverse-engineered documentation of the format and should not therefore be regarded as definitive. BIFF 8 is based on Microsoft\u2019s generic OLE2 Compound Document Format. An Excel workbook is stored as a \u2018Book\u2019 stream within a Compound Document Format file. The Book stream comprises a Workbook Globals Substream, containing a Beginning of File (BOF) record, the Workbook global records, and terminated by an End of File (EOF) record. This is followed by one or more Worksheet substreams, containing a Beginning of File (BOF) record, the worksheet records, and terminated by an End of File (EOF) record. The format remained unchanged with the release of Excel 2000.",
  "releaseDate": null,
  "binaryFileFormat": "Binary",
  "formatNote": null,
  "lastUpdatedDate": "18 Dec 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": "11 Mar 2005",
  "formatDisclosure": "None",
  "formatEnvironment": null,
  "formatRisk": null,
  "formatAliases": "Microsoft Excel Workbook (97-2000)",
  "formatTypes": "Spreadsheet",
  "formatFamilies": null,
  "identifiers": [
    {
      "identifierText": "application/vnd.ms-excel",
      "identifierType": "MIME"
    },
    {
      "identifierText": "com.microsoft.excel.xls",
      "identifierType": "Apple Uniform Type Identifier"
    },
    {
      "identifierText": "fmt/61",
      "identifierType": "PUID"
    }
  ],
  "internalSignatures": [],
  "externalSignatures": [
    {
      "externalSignature": "xls",
      "signatureType": "File extension"
    },
    {
      "externalSignature": "xlw",
      "signatureType": "File extension"
    }
  ],
  "relationships": [
    {
      "relationshipType": "Has lower priority than",
      "relatedFormatID": 44,
      "relatedFormatName": "Microsoft Excel Template",
      "relatedFormatPUID": "x-fmt/17"
    },
    {
      "relationshipType": "Has lower priority than",
      "relatedFormatID": 1706,
      "relatedFormatName": "Microsoft Works Spreadsheet",
      "relatedFormatPUID": "fmt/901"
    },
    {
      "relationshipType": "Has priority over",
      "relatedFormatID": 682,
      "relatedFormatName": "Microsoft Excel 5.0/95 Workbook (xls)",
      "relatedFormatPUID": "fmt/59"
    },
    {
      "relationshipType": "Has priority over",
      "relatedFormatID": 767,
      "relatedFormatName": "OLE2 Compound Document Format",
      "relatedFormatPUID": "fmt/111"
    },
    {
      "relationshipType": "Is previous version of",
      "relatedFormatID": 685,
      "relatedFormatName": "Microsoft Excel 2000-2003 Workbook (xls)",
      "relatedFormatPUID": "fmt/62"
    },
    {
      "relationshipType": "Is subsequent version of",
      "relatedFormatID": 683,
      "relatedFormatName": "Excel 95 Workbook (xls)",
      "relatedFormatPUID": "fmt/60"
    },
    {
      "relationshipType": "Is subtype of",
      "relatedFormatID": 767,
      "relatedFormatName": "OLE2 Compound Document Format",
      "relatedFormatPUID": "fmt/111"
    }
  ],
  "containerSignatures": [
    {
      "containerType": "OLE2",
      "id": "2010",
      "description": "Microsoft Excel 97 OLE2",
      "files": [
        {
          "path": "Workbook",
          "byteSequences": [
            {
              "subSequences": [
                {
                  "position": "1",
                  "subSeqMinOffset": "0",
                  "subSeqMaxOffset": "0",
                  "sequence": "09 08"
                },
                {
                  "position": "2",
                  "subSeqMinOffset": "0",
                  "subSeqMaxOffset": "4",
                  "sequence": "00 06 05 00"
                }
              ],
              "reference": "BOFoffset"
            }
          ]
        }
      ]
    },
    {
      "containerType": "OLE2",
      "id": "2020",
      "description": "Microsoft Excel 97 OLE2",
      "files": [
        {
          "path": "Book",
          "byteSequences": [
            {
              "subSequences": [
                {
                  "position": "1",
                  "subSeqMinOffset": "0",
                  "subSeqMaxOffset": "0",
                  "sequence": "09 08"
                },
                {
                  "position": "2",
                  "subSeqMinOffset": "0",
                  "subSeqMaxOffset": "4",
                  "sequence": "00 06 05 00"
                }
              ],
              "reference": "BOFoffset"
            }
          ]
        }
      ]
    }
  ],
  "submittedBy": [
    1
  ]
}