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....xls"); $ok ++ ; print "open $ok\n"..."abc" ); $workbook -> save ( "t1.xls" ); $ok ++ ; print "save $ok\n"...