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....layer ); Graphics graphic = new Graphics ( layer ); graphic . Clear...); // Pen 도구를 사용하여 사각형 그리기 graphic . DrawRectangle ( new Pen (...