Quote:
Originally Posted by bcbob
That's interesting. I am curious why they are displayed at all. It seems like scaffolding remaining after a building is finished.
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Probably because a "page" can (and often does) start/finish somewhere other than the bottom of the screen it's displayed on. The number on the side of the line let's you know where the "page" actually starts. As most readers do give you the option to turn off the numbers but not all, there also are likely some that don't give you page number at top or bottom of a screen so you'd have no way of knowing what page you were on.