Never can remember the difference between the 2 button highlight FX on OSX. Pressing space pushes which one again?pic.twitter.com/e6psjMqXG7
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Man, I never realized how weird this behavior was from an outside perspective. There are some historical reasons for how it is.
The thin highlight is newer; you can move it to different buttons with tab. Esc always presses Cancel, if a cancel button exists.
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