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Summary
Name	Lotus 1-2-3 Worksheet
Version	1.0
Other names
Identifiers	MIME: application/vnd.lotus-1-2-3 MIME: application/x-123 PUID: x-fmt/117
Family
Classification	Spreadsheet
Disclosure
Description	Lotus 1-2-3 Worksheet v 1 is a spreadsheet format developed for the spreadsheet, charting, and database software of the same name. Lotus Development Corporation released Lotus 1-2-3 in 1983 and its popularity led to it becoming close to an industry standard through the early 1990s.
Orientation	Text
Byte order	Little-endian (Intel)
Related file formats	Has lower priority than Microsoft Works Spreadsheet (1-5) Is previous version of Lotus 1-2-3 Worksheet (2.0) Is previous version of Lotus 1-2-3 Worksheet (3.0) Is previous version of Lotus 1-2-3 Worksheet (4-5)
Technical Environment
Released
Supported until
Format Risk
Developed by	None.
Supported by	None.
Source	Digital Preservation Department / The National Archives
Source date	02 Aug 2005
Source description	v.120- New description added as part of PRONOM Research Week 2024. Submitted by the J. Paul Getty Trust
Last updated	03 Jan 2025
Note