1. Return to Prinergy Workshop.
2. Select the Separations view, and then the Petra Bag Layout.
3. From the Process menu, select Layout Proof > Virtual proof > Virtual Proof.Stepped.600.
4. In the Start Process dialog box, click OK.
5. Open the VPS files and view your proof on the screen.
6. Quit the VPS application after proofing.
7. Close the job.