Play Demo Sequences

1. Press and hold both the [MASTER] button and the [EDIT] button simultaneously.
2. The demo sequence will start momentarily.
3. Press [ENTER] to stop the sequence.
4. Press the [RIGHT CURSOR] button to toggle between sequences.
5. Press the [LEFT CURSOR] button to restart the current sequence.

Source: Proteus FX — proteusfxownersmanual (manual)