This feature is available in MCS 10.0g and above. It's also an HTML5 only feature.
restartinitiate() is the function.
So, if at the end of a browser test there is a requirement for the user to perform another test, simply create a button or link in the page that calls the above function.
The test will then refresh and present the user with the click to start button (or autostart if that option has been chosen).