ArcGIS Web AppBuilder allows users to edit the Attributes of an app, such as the logo, title, subtitle, and links. The ability to include text or links at the bottom of the map near the map source information would be useful. The use case is when data sources require crediting on the map and when placing this information in the About widget does not satisfy that requirement.
The ability to include additional source information near the existing map source information would be very useful.