============== Back Forward List ==============
        http://127.0.0.1:8000/navigation/forward-and-cancel.html
        http://127.0.0.1:8000/navigation/resources/forward-and-cancel-frames-container.html
            http://127.0.0.1:8000/navigation/resources/forward-and-cancel-frames.html (in frame "<!--framePath //<!--frame0-->-->")
                data:text/html,initial (in frame "frame1")
            http://127.0.0.1:8000/navigation/resources/otherpage.html (in frame "<!--framePath //<!--frame1-->-->")
curr->  http://127.0.0.1:8000/navigation/resources/forward-and-cancel-frames-container.html
            http://127.0.0.1:8000/navigation/resources/forward-and-cancel-frames.html (in frame "<!--framePath //<!--frame0-->-->")
                http://127.0.0.1:8000/navigation/resources/slow-resource.pl?delay=250 (in frame "frame1")
            http://127.0.0.1:8000/navigation/resources/otherpage.html (in frame "<!--framePath //<!--frame1-->-->")
===============================================