Hi Micheal,

this is the right moment to say something about the Cplane.

Ok, I come from TC. There I only need to choose three points to define the Cplane. The first is the origin, the second x-axis, and the third y-axis. That´s it.

In MoI I must define a rotation axis for the third point, to define it. I can handle it, but this is a little bit more complicated then in TC.

I know, this princible is also used in the orient tool, and there it is usefull.

Rudl