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 -> get_SlideSize ()..."pres-4x3-aspect-ratio.pptx" , SaveFormat :: Pptx ); Specifying Custom...