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....loadOptions ); Worksheet sheet = workbook . Worksheets [ 0 ]; sheet...Workbook (); Worksheet sheet = book . Worksheets [ 0 ]; Cell a1...