This property has been Deprecated. This property is unnecessary as the CoordinateSystem now gets updated automatically.
A flag that determines whether or not the CoordinateSystem Object is to be re-evaluated. If Update is set to 1, the Coordinate System will be re-evaluated; if Update is set to 0, the Coordinate System will not be re-evaluated. The Update property is essentially a short-cut way of allowing the user to re-evaluate the CoordinateSystem Object when the underlying vectors that built the coordinate system have changed, but are not based on time. For time-dependent vectors, use the Epoch property instead.
Timing Precision Mode
This page describes functionality in millisecond timing precision mode.