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...."Worksheets" , array ()); $worksheet_index = $ptr -> Call ( $worksheets..."Item" , array ( $worksheet_index )); $ptr -> Set ( $worksheet...