Hi,

Thanks very much for the link.

Yes that alternate behavior is like what I was expecting.

The issue with placing a dimension from one object to another does not seem like it will be an issue for me in the majority of situations. It's easy enough to work around.

Perhaps a "check box" could be placed on the "dim" panel allowing a quick selection of the two behaviors. This might satisfy most everyone and still allow manual placement of the c-plane as needed.

Just a thought.

Frederick