Selection: A selection from which you choose what appears in the Baseline and Release Templates main window. If you made a specific selection under Baseline and Release Templates from the main Dimensions Administration Console, this field will be set to that selection. The selections are:
Baseline Templates
Release Templates
Item Type Groups
Base Database Node: 
This shows the name of the base database and the type of object selected.
List: A list of all the objects (baseline/release templates or item type groups) as determined by the List Selection above. Clicking on the base database node of this list displays a list of all those objects in the content pane. Clicking on a specific object displays more comprehensive details for that object in the content pane.