Convert WK4 to OTS

The WK4 file extension, short for Lotus 4 Worksheet, was developed by IBM for its Lotus 1-2-3 spreadsheet software. These files store data in cells organized into rows and columns, similar to modern spreadsheets. Primarily used for data entry and accounting, WK4 files have become less common with the discontinuation of Lotus 1-2-3. While older versions of Microsoft Excel could import WK4 files, this support was dropped in Excel 2007 and later. Today, specialized converters or older spreadsheet programs like Gnumeric can still open WK4 files.

The OTS (OpenDocument Spreadsheet Template) file extension, maintained by the Organization for the Advancement of Structured Information Standards (OASIS), is used to create spreadsheet templates with predefined styles and formatting in Apache OpenOffice Calc. Introduced in 2005, OTS files facilitate the creation of consistent and reusable templates for tasks like budget planning and invoicing. These files are XML-based, compressed as ZIP archives, and compatible with various open-source spreadsheet applications.