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      <FormatName>Lotus 1-2-3 Worksheet</FormatName>
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      <FormatTypes>Spreadsheet</FormatTypes>
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      <FormatDescription>Lotus 1-2-3 Workbook is a spreadsheet program produced by the Lotus Software Group (later acquired by IBM). The original release was in 1983 and it has been discontinued since 2013.

The original 1-2-3 files have .wks extensions. Version 2.0 originally used a .wk1 extension but this was changed quickly to .wk2 and after this the number in the extension corrolates with the version number. Some later versions have the extension .123</FormatDescription>
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      <ProvenanceName>Digital Preservation Department / The National Archives</ProvenanceName>
      <ProvenanceSourceDate>16 Oct 2021</ProvenanceSourceDate>
      <ProvenanceDescription>
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      <LastUpdatedDate>16 Oct 2021</LastUpdatedDate>
      <FormatNote>
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        <SignatureID>1815</SignatureID>
        <SignatureName>Lotus 1-2-3 Worksheet Version 97</SignatureName>
        <SignatureNote>Section Record Type = 0, record length dec 26 = 1A; file format version number = hex 03100400</SignatureNote>
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          <PositionType>Absolute from BOF</PositionType>
          <Offset>0</Offset>
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