My original tutorial actually required the user to physically open up multiple tabs and have them be side-by-side. However it was a mess and people didn't like it. So I opted to fake it... while still depending upon the real tech underneath.
HOWEVER, it is just running on a freebie heroku box, so it is probably bound to crash/fall-over soon.
https://dl.dropboxusercontent.com/u/4374976/gun/web/tabs.htm...