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You just use the 5-way up (and down) button to navigate (the left-right does the same thing, BTW), and you can scroll in programs that allow it (such as ereader). My wife and daughter think I'm nuts, but in the past few months I have read entire books with ease (Lord Jim, Atonement, Genghis Khan, Dexter, Gettings Things Done,...). But I do have one worry: will this affect my eyes, although at my age (72) I suppose it doesn't make much difference. Incidentally, I wonder how navigation will set up when ereader, for example, comes to the iphone as it has no hardware buttons.
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