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....WorkbookDesigner (); //Get the first worksheet(default sheet) in the workbook...Cells . Worksheet w = report . Workbook . Worksheets [ 0 ]; //Input...