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....print "open $ok\n" ; my $ worksheets = $ workbook -> getWorksheets...print "worksheets $ok\n" ; my $ worksheet = $ worksheets -> get...