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....srcPres = new Presentation ( "data/Source Frame.pptx" ); IShapeCollection...( i + 1 ); } pres . save ( "data/ErrorBarsCustomValue.pptx" ...