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....value of the list item, and “1:test” is the list item’s displayed...Validation . ValueList . Add ( "1,1:test" ); // Adds to a validation...