The Web Application object, SYS_WEB, is a globally scoped singleton object that you use to access web runtime specific features such as:
11.1 Alert, Confirm and Prompt Boxes
11.2 The Console
11.3 Navigate to another Page or Resource
11.4 Using Browser History and the Back Button
11.5 URL and URL Query String
11.6 Session and Local Storage
11.7 Online Verification
11.8 Printing Interface
11.9 Routing Path Parameters