Uninitialized indicates that a value is unknown, and should be returned by the Tuner. Note that any locator properties or ...

          Uninitialized indicates that a value is unknown, and should be returned by the Tuner.  Note that
            any locator properties or attributes that are omitted in either direction are assumed to be set
            to Unitialized.
          Undefined indicates that the property isn't applicable to the current situation, and is
            being set to a known invalid value.