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 < Presentation > ( u "pres.pptx" ); pres -> Save ( xamlOptions...