If you want to display node number or some other things for the mid-point of elbow. Isogen dlls will break 90 degree bend into two 45 degree bends, so there is space for mid-point. This is done automatically by Isogen dlls. So the solution is to un-select the check box for elbow mid-point.

This could be "fixed" in CAESAR II by using the coordinate of the tangent intersection point for mid-point and all points other than near and far. The elbow will look very smooth, but the isometric drawing is not accurate.

Regards,