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....string FileName = FilePath + "Insert text into a cell.xlsx" ; InsertText...FileName , "Inserted Text" ); // Given a document name and text, // inserts...