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In safari, when you are navigating a page, this can be extensive and make the screen scroll vertically. When browsing through its contents, you may have to "scroll" the screen enough to the bottom of the page. To return to the top of the browser, we have to roll until the beginning OR... just give two finger clicks in the status bar of Safari and it automatically calls the page to the start. In less than a second we are at the top again.