You can open multiple Debugger Context Browser windows. The Debugger Context Browser window closes when you reset the Debugger.
A recommended use for a Debugger Context Browser is as a Watch window. This enables you to continue viewing the Thread And Stack pane and Data pane (with the Debug tab of the AppBrowser selected), while also viewing Watch information.
To open the Debug Context Browser, choose View|Debugger Context Browser.
See also:
Context-sensitive help: Data pane
Context-sensitive help: Threads and Stack pane
Context-sensitive help: Watch pane
User's Guide: Using the Debugger Context Browser as a Debugger pane