JQuery mobile go back in history using Javascript

It's not clear at all in the documentation, but here it is:

$.mobile.back();

And if you want to use this to make the Android back button work properly on your Cordova app, do this:

document.addEventListener("backbutton", onBackKeyDown, false);
        function onBackKeyDown() {
            $.mobile.back();
        }

iCloud is enabled in iPhoto. Would you like to use iCloud with Photos instead?

Is there anyone out there that understands what this means?