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....FilePath + "Move a slide to a new position.pptx" ; MoveSlide (...presentationDocument == null ) { throw new ArgumentNullExceptio ( "presentationDocument"...