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Description
Multiline editing is currently possible by holding Alt and dragging the mouse to create a multiline cursor. I find this slow and imprecise. Could we also please have a keyboard shortcut to do this? For example, Sublime Text 3 uses Shift+Alt+(up or down arrows). I don't know what's possible with a browser based notebook though.
This is mentioned in a comment on issue #2527 but not responded to.