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....supports processing Cells (DOC, DOCX, OOXML, RTF) HTML, OpenDocument..."HelloWorld.xls" , file_format_type . EXCEL_97_TO_2003 ) print "Document...