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My network cards name changed from p3p1 to enp12s0 during an update, which caused Mathematica to think it was unregistered and the activation key didn't work because it thinks it's still registered to another machine. I changed the networks cards...
It would be nice if "\ [ Transpose ]" etc got displayed as they do in mathematica. Perhaps this could be achieved with a @font-face containing the Personal Use Area symbols used in mathematica and some javascript trickery in the editor. Even if...