I have never seen Tick Marks on the Kindle in the first place, but I see now. So I'm not sure if this is only for the newest Kindle or if it's just the new books they have. But I like them. A bar at the bottom of the screen with little ticks and can use the five-way button to stir between ticks in the book. Generally, they are for the dissimilar chapters, but I heard that they can as well set off between the sections. I love this feature. I use it a lot and now I look at all the books I read.
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