From the Debug view

You'll probably use the Debug view primarily to control your program flow.
To control your debug execution:
  1. In the Debug view, select the thread you wish to control.
  2. Click one of the stepping icons (e.g. Step Into) in the Debug view's toolbar. Repeat as desired.
  3. Finish the debug session by choosing one of the debug launch controls (e.g. Disconnect). For details, see the section Debug launch controls in this chapter.
Parent topic: Controlling your debug session