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....Excel 2007 XLSX Version : 12 . 0000 Excel 2010 XLSX Version :...: 14 . 0300 Excel 2013 XLSX Version : 15 . 0300 Setting Formula...