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They remapped backslash to esc. Kind of a pain since you have to go through 2 keyboards to get to it, but it works.

How are you supposed to code without backslashes? Are they anticipating never needing to escape anything?

How exactly would going through 2 keyboards to switch modes work in a practical situation?

That's why you'd edit .vimrc to rebind the functionality provided by escape to 'jj' or 'jk' or something of the nature.