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....pptx" ); pres -> Save ( System :: MakeObject < XamlOptions...> ( u "pres.pptx" ); pres -> Save ( xamlOptions ); Convert PowerPoint...