What does it mean to sync titles in kindle paperwhite?

Syncing titles on a Kindle Paperwhite means synchronizing your reading progress, bookmarks, notes, and highlights across all your Kindle devices and apps. When you enable this feature, any changes made on one device—like finishing a chapter or adding a note—will automatically update on your other devices connected to the same Amazon account. This ensures a seamless reading experience, allowing you to pick up right where you left off, regardless of which device you are using.