Correcting Mistakes

If at any time you make a mistake while entering boundaries, you may "undo" the vertices of the boundary you are entering, by:

Either action will remove the last vertex from the current polyline you are entering. Undo can be repeated any number of times to remove successive vertices from a boundary you are drawing – experiment with this option to see how it works.

Tips

The u command is only operative while you are entering a boundary. After a boundary has been added, you can use the global Undo option or the Edit options in the Boundaries menu to remove or edit boundaries.