- Extension
- .wk1
- .xml
- Format
- Binary
- Text
- Category
- Spreadsheet
- Developer
- Developer
- IBM
- W3C
- 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.
- An XML file is an XML (Extensible Markup Language) data file. It is formatted much like an .HTML document, but uses custom tags to define objects and the data within each object. XML files can be thought of as a text-based database.
- MIME Type
- application/vnd.lotus-1-2-3
- application/xml
