In this example you'll see how to correct an undershoot error, another type of dangle error. Undershoots are often found in line work imported from CAD programs or digitized without using snapping to control the connectivity of the line features. The end of this line fell short by a little more than half a foot. You’ll fix this error by extending the undershoot until it meets the line to which it should have been snapped.

The Fix Topology Error tool lets you interactively select and apply predefined fixes to topology errors on the map. Right-clicking on the map with the Fix Topology Error tool gives you a menu of fixes that you can apply to the selected errors. In this case you click Extend, to extend the line feature to the next line that crosses its path.

The Extend topology error fix prompts you for a Maximum distance. If the distance to the next line is greater than the maximum distance you specify, the line will not be extended.