I've been wondering for a while (version 2505 and now 3400) how to get information in the Layers control, the one just to the right of BaseMaps. Now I see that the new version of AGX, 3400, has some layers in there. For example, if you click Layers you'll see the DeLorme base maps, several Demographics layers and a layer called Imagery Older and Newer.
I've sleuthed around and am almost certain that it is not achieved with a default map, any settings within AGX, or any configuration. So this might not even be the correct location for this question. I've poked around the Portal guide and it does mention that Portal can be configured for basemaps and layers, but does not explain the Layers portion.
Thanks for any insight you might have.
~Ellen