- XLSFILE: name of the Excel file
- SHEETS: cell array with the worksheet names, or matrix with positive integers, or 'all', to tell which worksheets are going to be protected
- ACTION: 'protect' or 'unprotect'
- PASSWORD: password to protect or unprotect the worksheet
- XLSFILE will be edited
Guilherme Coco Beltramini (2020). Protect or unprotect worksheets in Excel file (https://www.mathworks.com/matlabcentral/fileexchange/42055-protect-or-unprotect-worksheets-in-excel-file), MATLAB Central File Exchange. Retrieved .
Added missing function
Inspired by: Check if XLS file is open and close it