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....x, you need to make some minor changes...AddEmptySlide (); //Adding a rectangle (X=2400, Y=1800, Width=1000 & Height=500)...