コントロールキー
This inconsistency between manufacturers, and the overall issue of Control key shrinkage, has long been a point of contention between laptop purchasers and users, which is aggravated by the fact that on most keyboards the Fn key is mapped at the hardware level and so cannot be remapped (that is, reconfigured or virtually "moved") at the OS level. Lenovo, however, have since circa 2011 allowed users to reverse the Fn and left Control key arrangement via a BIOS setting.