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....background type firstMasterSlide . Background . Type = BackgroundType...ignorePreserveField : true ); } ⚙️ Tip: Use RemoveUnused(true) to clean up...