I understand that and I’m just a fitter
The wind arrow isn’t the best, it should indicate an upstream quarter, your understanding of the layout in your answer has proven this.
Basically if you were fishing a river and the wind was front right and your fly can and must fish beyond the typical downstream dangle position, eg the current runs from right to left slightly too, basically this final position will see all downstream wind cast variants out of the picture.
So how, from this position do you set up an up stream d loop?
Cheers