Direction of joints (Piston & Servo)

[Davidfi1]

Hi all
After I place a joint I need a way to tell what its direction is.
Is there a simple way to tell by its appearance?
Could the arrows on the joint tell me its direction some how?

Thank you,
David.

[CPhillips]

There isnt any visual clue (yet). In part because the direction can be flipped by using negative values for min/max and accel.