Instructions for Scrolling View in iBooks.

From the normal (landscape view) of the book, tap the upper right of the screen (area of red circle).

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The screen below will appear

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Tap on the AA (circled in red)

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This screen below will appear. Here you can change the brightness of the display (blue circle) by moving the slider, and change to Scrolling View (red circle).

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Tap on the A or A (circled in red) to change font size

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From Scrolling View tap on the A  A (circled in red) to get back to regular view

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