What is the purpose of Unsmooth Lines?
To revert a smoothed polyline to its original state. While it is not necessary, in some cases it might be easier to reshape a smoothed polyline by returning it to an unsmoothed state. Unsmooth Lines lets you do this.
When is Unsmooth Lines active?
When a Map window is active, the layer is editable, and a polyline object is selected from the editable layer.
How do I access Unsmooth Lines?
On the SPATIAL tab, in the Edit group, click Fix/Clean, and click Unsmooth Lines.