Attribution Widget added to the API to show information about the data sources used to build the map services displayed in the map. The screen shot below show the default version of the widget (the widget expands/collapses with a single click):
The widget automatically updates based on layer visibility and map extent and attribution information comes from a layer’s custom attribution data or a map service’s copyright text. The Attribution Widget is automatically included when using the full build of the API. When using the compact build, it must be manually included. See the Attribution Widget API reference for more information, including the CSS classes used to change the look of the widget.
VSDoc for Code Completion in various IDEs