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....> < worksheet xmlns = "http://schemas.openxmlformats.or...org/spreadsheetml/2006/main" xmlns : r = "http://schemas.openxmlformats.or...