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....new Presentation (); IChart chart = pres . getSlides (). get_Item...Doughnut , 50 , 50 , 400 , 400 ); chart . getChartData (). getSeriesGroups...