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....rectangle with Pen tool graphic . drawRectangle ( new Pen ( Color ...graphic . drawRectangle ( new Pen ( new SolidBrush ( Color . getBlue...