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....Presentation object that represents a PPT file $pres = new Presentation...save ( "demoPass.pptx" , SaveFormat :: Pptx ); } finally { if...