There is not a way to physically move or edit the shape of a contour line, but there are some workarounds: 1. Edit the grid in the Grid Node Editor You can change the grid node values of the grid file to affect the shape of the contour lines. To do this: You could convert the Contours layer to a Base layer containing drawn objects (polylines). Then manually reshape the contour polylines in the Base layer: If there is a particular area where the contours need to be better constrained, then you could add some dummy data points in that area to the raw data to help make the contours in the shape you want. For example: Much appreciated, as always. The support from Golden Software is excellent! Brian Cellura Senior Geologist Golden Software is in a class all its own! Your software is outstanding. But, what I really appreciate is when I have a problem, in a matter of minutes I can get a friendly, live, competent technician on the phone. Who else offers that service in this day and age? Paul Lundegard Ph.D., Environmental Geoscientist Copyright © 2016 Golden Software, LLC. All rights reserved. The names and logos for Surfer, Grapher, Voxler, MapViewer, Didger, Strater and Golden Software are registered trademarks of Golden Software, LLC. Source.