Show Version Tree

Use the Show Version Tree option to compare a ClearCase element with a version of the element other than its immediate predecessor by right-clicking the object within WebSphere Studio and selecting the Show Version Tree option from the Team context menu or clicking the ClearCase Show Version Tree icon . The ClearCase Version Tree Browser appears. Within the Version Tree Browser, right-click a version. The cursor changes to a target icon. Click the version you want to compare. 

This option becomes active after you connect to ClearCase.