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....$doc_info -> setCreationDate ( new Date ()); $doc_info -> setKeywords...$doc_info -> setModDate ( new Date ()); $doc_info -> setSubject...