This guide demonstrates how to edit XLS, XLSX, XLSM, XLSB, ODS, SXC spreadsheets with hidden worksheets, protect edited spreadsheets with passwords, and many other powerful features of GroupDocs.Editor for Node.js....This guide demonstrates how to edit XLS, XLSX, XLSM, XLSB, ODS, SXC spreadsheets with hidden worksheets, protect edited spreadsheets with passwords, and many other powerful features of GroupDocs.Editor for Node.js.