> You need to have multiple copies open at the same time if you want to refer to different parts at the same time. That's true but that's a huge advantage to e

> You need to have multiple copies open at the same time if you want to refer to different parts at the same time. That's true but that's a huge advantage to ebooks. Having two copies of the book open, one for the "Diagram on page 240." Can't do that with a book.