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....Cell foundCell = null ; object obj = 20 ; //Find 20 which is Sum(A1:A2)...= worksheet . Cells . Find ( obj , foundCell , options ); //Print...