Hello, I figure that this will be a long shot, but why should I not try? In both Fritz GUI and in TCEC Unofficial World Computer Chess Championship the spectators are always able to see a chess engines' PV on a small board. Winboard has a great engine output function /window; nevertheless, would it be possible to code a variation board into Winboard? This way a viewer can see both actual gameplay and the engines' PV simultaneously. Of course PV notation is great too. However, seeing an engines' PV displayed on a small variation board would help the user to better see its plans, ideas and "thoughts".
All the best,
DrummerBoy25