Break Point: Stops a test run at a specific step in the test. A red icon appears in the left margin of the step to indicate that a breakpoint is inserted on the step. The test runs until it reaches the breakpoint. You can examine or manipulate steps up to the breakpoint.
Insert/Remove BreakPoint: Debug menu->Insert/Remove BreakPoint (F9)
Enable/Disable BreakPoint: Debug menu->Enable/Disable BreakPoint (Ctrl+F9)
Clear All BreakPoints: Debug menu->Clear All BreakPoints (Ctrl+Shift+F9)
Enable/Disable All BreakPoints: Enables or disables all breakpoints within a test.