Point fixed relative to reference system based on another point evaluated at specified time instant.
  ReferenceSystem | A reference system. Can be any VGT system. | 
  ReferenceTimeInstant | A reference time instant. Can be any Time event. | 
  SourcePoint | A source point. Can be any VGT point. | 
| Implemented Interface | 
|---|
| IAgCrdn | 
| IAgCrdnTimeProperties | 
| IAgCrdnPoint | 





