- Extension
- .wk1
- .xltm
- Format
- Binary
- Binary
- Category
- Spreadsheet
- Spreadsheet
- Developer
- IBM
- Microsoft
- Description
- Lotus Worksheet (wk1) is a file type used by the Lotus 1-2-3 spreadsheet application. It is a binary file format used to store worksheets, which can contain numerical and textual data, as well as formulas, charts, and images. It is now considered an obsolete file type and is replaced by the newer xlsx format.
- Template file created by Microsoft Excel, a spreadsheet program; contains default settings and layout properties for a macro-enabled spreadsheet.
- MIME Type
- application/vnd.lotus-1-2-3
- application/vnd.ms-excel.template.macroEnabled.12
