Do I have to be connected to the internet to read my ebook?

No. You can access 100% of your VitalSource ebook without an internet connection. To access your ebook offline, you will need to download the Bookshelf app onto your computer, tablet, or mobile device. For more information about the Bookshelf app, visit: https://support.vitalsource.com/hc/en-us/categories/360001056774
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Are VitalSource ebooks reflowable?

No. Most of our ebooks originated as pdf files, which maintains the look and feel of a bound book. The text is fixed and the screen size determines the size of the text.
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Can I highlight, take notes, etc?

Yes. VitalSource offers a wide range of features, including but not limited to: notes, highlights, text-to-speech, and more. For more about VitalSource features, visit: https://support.vitalsource.com/hc/en-us/articles/360020561994-Bookshelf-Overview
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