From the Front Panel:
Press Alt+Tab to move the keyboard focus to the Front Panel.
Press the arrow keys to move the highlight within the Front Panel and select a control.
Press Return or the Spacebar to choose the control and open the application's window.
From Application Manager:
Open the Application Manager window by choosing its Front Panel control as described above.
Press the arrow keys to move the highlight to an application group icon within the Application Manager window.
Press Return twice to open the application group.
Press the arrow keys to move the highlight to an application or action icon, then press Return twice to start the application.
From a terminal emulator window: