Assertion: keyboard's key | /r/HasProperty | inherited
Facets:
value: from old dos keyboard drivers
type: OTHER
Source sentences:
text: Most operating systems allow switching between functional keyboard layouts, using a key combination involving register keys that are not used for normal operations (e.g. Microsoft reserve Alt + ⇧ Shift or Ctrl + ⇧ Shift register control keys for sequential layout switching; those keys were inherited from old DOS keyboard drivers).