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The WK4 file format is a type of Lotus 4 Worksheet used by version 4 of the Lotus 1-2-3 spreadsheet software. It stores data in cells organized into rows and columns and can contain strings of characters, numbers, or formulas. While earlier versions of Microsoft Excel were able to import WK4 files, support for the format was discontinued in Excel 2007 and later versions.
| Name | Lotus 4 Worksheet |
|---|---|
| File Extension(s) | .wk4 |
| Category | Spreadsheets |
| Use For | N/A |
| Developer | IBM |
| MIME Type(s) | application/vnd.lotus-1-2-3 application/x-123 |
| License | N/A |
| File Sample(s) | N/A |