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.... StartRow = 2 ; ca . StartColumn = 1 ; ca ....EndRow = 18 ; ca . EndColumn = 2 ; //Apply subtotal, the consolidation...