when i type 'g', the autocomplete feature suggests 'gmail.com'. After typing 'g', i type 'oo' and the suggestion feature suggests 'google.com' on its own. I do not have to type the complete 'google.com'. i type 'goo' and then i can press enter
The article chooses as its starting point the ENTER key hitting the bottom of its travel -- how you got the url or whatever into the address bar doesn't really matter.
It does not matter for the purposes of this project. You could go even further back and look at how the browser renders the location bar, how the OS starts the browser, how the machine boots the OS.... None of those matter, even if they are interesting in their own right.
