Hold the book in the air. Let it go. What happens to the book is the result of gravity.
The gravity affecting this puzzle is so extreme it's affecting the letters on the page. What happens to the book when you let go happens to the letters you write at the top of the page.
They get reordered as a consequence.
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Spoiler!
Re: Page 59
Spoiler!
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Thanks a lot!!!!
Re: Page 59
Because 'extreme gravity' really seems more like a red herring than an actually useful bit of information, below is the answer. DO NOT CLICK IF YOU DO NOT WANT TO KNOW THE ANSWER!!
Spoiler!