The Thesaurus Browse View

In addition to the standard display views, the Thesaurus module has a Browse View. Browse View provides a hierarchical view of all loaded thesauri. It interacts seamlessly with other modes (Search, Display and Edit), views (List, Contact Sheet, Page and Details) and, in EMu 5.0 onwards, with the Hierarchy View tab.

How it is accessed depends on your version of EMu (click here for details about identifying your version of EMu):