A + sign to the left of a scenario name indicates that the scenario contains additional information in one or more subfolders. Click on the + sign to expand the tree and see the additional information. The Results subfolder contains a list of the results scenarios associated with the parent scenario; each results scenario corresponds to a single model run of the parent scenario. The Dependencies folder lists all of the scenarios upon which the parent scenario is dependent.
A right-click context-sensitive menu provides access to all menu options that are available from the Scenario Manager window.