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....containing some data Workbook book = new Workbook ( dir + "sample...[] { 0 , 1 }); //Calculates Formulas book . calculateFormula ();...