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....Instantiate Presentation class that represents the presentation file...Rjb::import('com.aspose.slides.Presentation').new(data_dir + 'demo.pptx')...