In Shiny applications where UI and server codes are kept in separate files, enableBookmarking() has to be kept in the global.r file. The rest of the things are the same. For redeveloping the squared-number app in a multiple-file pattern, we have to copy the UI code and paste it into the ui.r file and server code in the server.r file with enableBookmarking(store="url") in the global.r file. We will get the same output as we got in the single-file implementation.