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....the PPTX file to the Disk $pres -> save ( "EmptySlide.pptx" ,... SaveFormat :: Pptx ); } finally { $pres -> dispose (); } Access...