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....workbook = new Workbook (); Worksheet worksheet = workbook . getWorksheets..."F5" cell int commentIndex = worksheet . getComments (). add ( "F5"...