Once you have added all your breakpoints, run or step through your program. When a breakpoint is hit, the Action Points view highlights the breakpoint that stopped execution.
Both the window title bar and the status bar at the bottom of the interface display information when a breakpoint is reached:
The above image shows execution stopped at a breakpoint. Similar information is displayed for the other action points, which currently are set through the command line interface as described in the section More on Action Points Using the CLI.