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....//Put some data into header rows (A1:A4) for ( int i = 0 ; i...( string . Format ( "Header Row {0}" , i )); } //Put some detail...