Amazon Kindle DX User Manual page 49

If you are reading a Kindle book, the menu shows the following options:
Turn Wireless Off — turns off Whispernet. When Whispernet is off, this option will
change to "Turn Wireless On."
Shop in Kindle Store — takes you to the Kindle Storefront.
Buy This Book Now — connects to the Kindle Store, purchases, and downloads
the full book to your Kindle. Only appears if you are reading a sample from the
Kindle Store.
KINDLE DX USER'S GUIDE 2 EDITION
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Chapter 3 · 49