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....with data, formatting, and formulas, the Workbook.combine(Workbook)...contain formatted data and formulas only. The **CellsHelper.mergeFiles(string[]...