The in the debugger, shown on the right, you can see several new enhancments:
You can also see in the debugger code view that permanent probes are colored red and temporary probes are colored yellow. The temporary probes will disappear when their containing method exits. Shown below is the panel used to insert the probes.
The stack inspector is shown in the upper right corner. The field list shows that the expression being executed has pushed three objects onto the stack. This mode allows the programmer to inspect these objects without having to step into a message send.
The adjcent probe selection panel is similar to the panel in the browser. The difference is the presence of the Temporary button, used to create temporary probes.