> Also, who do so many applications force oblique views? I'm able to adjust it by dragging with two fingers on my trackpad, which I think is the standard behav

> Also, who do so many applications force oblique views? I'm able to adjust it by dragging with two fingers on my trackpad, which I think is the standard behavior for that (albeit hard to discover). But I do agree, it's weird for that to be the default. There's also probably no key because the colors are mostly transparent, so it would be hard to make a key easy to understand. Labelling the contour lines seems like a reasonable approach imo.