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....//Creating empty presentation PowerPoint . Presentation pres = Globals...msoFalse ); //Add a blank slide PowerPoint . Slide sld = pres . Slides...