Stop: Depressing the Stop button puts the simulator in Stop mode. Stop mode is the default operating mode for all simulators. In Stop mode, you can place elements and prepare setups for simulation runs. Only in Stop mode can you access the Standard Menu. Clicking on the Stop button while the simulator is calculating the numbers for a simulation run halts the calculation.

No visual or audio feedback is available from media rooms (Ripple Tanks, Smart Sound Rooms and Connecting Sound Rooms) in Stop mode. Also, the Tape Recorder does not play in Stop mode.

In SoundLab, users can play instruments and send signals from the Signal Generator in Stop mode. Measurement tools work in Stop mode by default, though users can choose to turn them off in the tools' Properties Boxes or in the background properties.