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....$pres = new Presentation (); $chart = $pres -> getSlides () -> get_Item... 50 , 450 , 400 , true ); $chart -> getChartData () -> getCategories...