The old name misleadingly identifies it as the Greek letter on which it is based (and to which it case-folds); but U+00B5 is MICRO SIGN, not the Greek letter mu, and pretending it is the latter only leads to confusion. Retain the old name as an alias to the new, prepare to deprecate it from 6.11 and change all uses of it to the new name. [ChangeLog][QtCore][Qt::Key] Qt::Key_mu is now renamed Key_micro, since it is, in fact, the micro sign, not the Greek letter mu. The old name is retained as an alias for the time being. Change-Id: I4deb905f5e59b906710bd092c05a2c0a9b6bba65 Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>