Hi Pilou,

> By an alert message or an automatic modify ?

By drawing a new curve to replace the old one or possibly using the Rebuild command to reconstruct it. For Rebuild I think the angle of the tangent deviation is enough that the rebuild to tolerance mode will see it as a sharp kink and rebuild it in segments, but the rebuild by # of points option can be used instead. However, it may be better to just redo the entire curve.

- Michael