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.... Range cellA1 = sheet . Cells . get_Range ( "A1" );.... Excel . Range cellA5 = sheet . Cells . get_Range ( "A5" );...