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....C# //Add a new chart of type Column to chart collection int idx...Charts . Add ( ChartType . Column , 6 , 5 , 20 , 13 ); //Retrieve...