Works the same as iron sights ie you move the rear in the direction you want the POI to go but you move the front in the opposite direction that you want the POI to go.
Mike
I should have just applied the mechanical logic of canted rails, however, the front sight - rear sight tandem of iron sights has two planes of vision. I was under the mistaken impression that a scope combined those two planes into one plane, but then a canted rail wouldn't help anything if my mistaken impression were true.
