The screen with the actual program code is called the "Diagram". To see the Diagram of a LabVIEW program, go to the Window menu and select "Show Diagram".
Also, you may want to know where in the diagram is the terminal that correspond to a specific control or indicator in the Panel (The "Panel" is the "output screen/user screen", as you called) and viceversa. To do that, right-click the control or the node and select "Find Terminal" or "Find Control/Indicator". A quick way to do this is to double-click the control, indicator or terminal.
EJV
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