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....= FilePath + "Add WordArt Watermark to Chart.xlsx" ; //Open the...Charts [ 0 ]; //Add a WordArt watermark (shape) to the chart's plot...