Looks like we also need to know the satellite coordinate system to communicate with other space engineers.
And compare the ref with Cubesat standard XYZ axes: http://cubesat.org/images/developers/cubesat_standardrev12_1.jpg
The satellite coordinate system is especially used for:
Solid body structure might be the best design if we can make one.
Let's see how Swiss Cube make their structure into one solid body. Just Amazing!