Class Libraries & REST APIs for the developers to manipulate & process Files from Word, Excel, PowerPoint, Visio, PDF, CAD & several other categories in Web, Desktop or Mobile apps. Develop & deploy on Windows, Linux, MacOS & Android platforms....EXCEL_97_TO_2003 ) #Save in Excel2007 xlsx format workbook . save ( self...dataDir + "book.out.xlsx" , fileFormatType . XLSX ) #Save in SpreadsheetML...