At pressure levels, please show altitude isolines
With the wind display I can move the slider to show lower pressure levels, but the isolines stay with the surface pressure.
Suggestion: When move above surface pressure, isolines show the heights.
Alternative (and perhaps more intuitive/seamless coming from the surface): Change the slider to be height driven, with the isolines showing the pressure at the given height.
These would enable us to tell what's going on at high altitude.
Found the answer: Under More Layers, Display Isolines, and select Geopot. height.
Now the equivalent altitude will be displayed as isolines while keeping the pressure constant.
So yet again, Windy already had the facility I wanted. It's just too great!