Board Thread:Questions and Answers/@comment-69.92.188.170-20150728235534/@comment-82.109.66.147-20171027100156

If you really want too track where you have been, instreat of bookmarking areas of intrest, bookmark where you have been and write down your areas of intrest instead. This isnt perfect, but its an idea (unless there is a limit to how many bookmarks you can have).