Open File which can be xls, xlsx or csv. Cleanup the data by ensuring that any output files are UTF-8 encoded. Be sure to strip any control characters from the output, (vertical tab, backspace, pagebreak etc.). Finally, normalize all double quotes to normal quotes (Unicode 0x22) and single quotes to normal single quotes (Unicode 0x27). Strip any leading and trailing spaces from every value and save as a properly formatted CSV file.