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....$saveFormat = new SaveFormat (); //Instantiate a new workbook //Open...//Open a template file $book = new Workbook ( $dataDir . "book.xls"...