Constrains two arcs, circles, or ellipses to the same center point.
This command is equivalent to the Concentric option in GEOMCONSTRAINT.
Following are the valid constraint objects and points:
The following prompts are displayed.
Selects an object to be constrained.
Selects the first circle, arc, or ellipse to be constrained.
Selects the second circle, arc, or ellipse to be constrained.