How to show datum CSYS center of gravity in Pro Engineer Wildfire 4

To show datum CSYS center of gravity in Pro Engineer Wildfire 4, we can follow these steps:

Analysis | Model | Mass Properties
Tab Analysis | Quick -> Featured | Compute (googles icon)
Tab Feature | Datums, Create CSYS_COG

The result is there will be a new Anaysis Feature MassProp in Model Tree. This analysis feature has a datum coordinate system that point the center of gravity (csys_cog). This datum can be used later on in advance analysis such as optimization of center of gravity position.