============== Back Forward List ==============
        http://127.0.0.1:8000/navigation/relativeanchor-frames.html
        http://127.0.0.1:8000/navigation/resources/frameset.pl?frameURL=success200.html
            http://127.0.0.1:8000/navigation/resources/otherpage.html (in frame "footer")
            http://127.0.0.1:8000/navigation/resources/success200.html (in frame "main")
curr->  http://127.0.0.1:8000/navigation/resources/frameset.pl?frameURL=success200.html
            http://127.0.0.1:8000/navigation/resources/otherpage.html (in frame "footer")
            http://127.0.0.1:8000/navigation/resources/success200.html#anchor1 (in frame "main")
===============================================