- Extension
- .123
- .xlw
- Format
- Binary
- Binary
- Category
- Spreadsheet
- Spreadsheet
- Developer
- IBM
- Microsoft
- Description
- The 123 file format is a proprietary file format developed by the Lotus Development Corporation for use with its Lotus 1-2-3 spreadsheet software. It is a binary file format, which means that it stores data in a binary format that is not easily readable by humans.
- Workspace file saved by Microsoft Excel, a program used to create spreadsheets; contains the screen locations of one or more workbooks, as well as references to the workbook files; used to restore the layout when working simultaneously on multiple workbooks.
- MIME Type
- application/vnd.lotus-1-2-3
- application/vnd.ms-works
