Adobe Digital Publishing Suite - Manual (Page 153)

Custom libraries have access to the Library and Store APIs.
Custom slots
Custom slots (also called "custom navigation icons") appear on the bottom navigation bar. When tapped, these custom slots display a web view,
such as a custom store or an FAQ page. The web view HTML can include references to the Library and Store API.
Tapping any of the navigation icons displays a web view. The HTML content in each web view can reference the Library and Store APIs.
Entitlement banner
If your app include direct entitlement, you can define an HTML banner to display at the top of the library view, as shown in the above images. You
use the banner as a call to action for print subscribers to get immediate access to the content, to make subscription offers, or to display ads. The
entitlement banner has full access to the Library/Store API. For details, see
Leveraging direct entitlement with DPS .
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