The Dump Tree is a hierarchical view that displays all of the information available for the selected dump. In this view, tree branches can be expanded or collapsed to display only the desired data, enabling you to drill down into an area of interest while ignoring data that you consider less helpful.
If you double-click a job name/ task name or a program name in the Index view, the dump report is loaded and the dump tree is built. The Dump Tree includes tree branches or nodes for formatted reports generated at capture time, programs that were loaded at the time of the abend, and various types of control blocks.