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....add_chart(type, x, y, width, height) Creates a new Chart, initialize...end of the collection. add_chart(type, x, y, width, height, init_with_sample)...