Questions based on restarting programs in various programming languages belong in this tag.
Based on certain conditions, the entire application may need to be restarted. In these cases, it is likely that the code file in question is already being run as the main()
of the application. Restarting an application at this level is not always trivial.
Since different languages may handle this differently, a question tagged with this tag must also be tagged with the programming language being used