Quote:
Originally Posted by theducks
Send a fresh(er) copy to my Reader.
 Modified works to inform me that I have changed an 'Empty Book' to a Full Book  (the date column has the record creation date)
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Ah.

So I guess what it actually does is read the latest modified-dates off the OS modified date on any file in the book folder? Or does calibre just assign today's date when I Edit or change any metadata?
I don't use Empty Books, prefer using placeholder formats for wishlist items then switch formats when a good format for that book comes in. But if I did use Empty Books, I'd use the Modified column.
I can't think of any other reasons to want Modified to take up library booklist space.