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....//Instantiate a workbook and open the template XLSX file Workbook book =...= new Workbook ( dataDir + "book1.xls" ); //Save the HTML file...