### Feature Control Frame Trihedron

If you select a FCF command in the Edit window, and that command uses a datum reference frame, PC-DMIS displays a blue and yellow trihedron
to represent the reference frame for your FCF. This differs from the red and green trihedron used to represent your part's current alignment.

The following screen shot shows the alignment's trihedron in red and green and the FCF's trihedron in blue and yellow:

Screen Shot of FCF Trihedron (above) and Alignment Trihedron (below)