Autodesk CIVIL3D - CIVILDESIGNCOMP 2007 SLM CD Tutorials Manual page 390

Notice that the area of parcel 105 has changed. However, there is now
an unnecessary lot line remaining to the North of the parcel. You will
delete the unnecessary portion of that lot line in the following steps.
Trim an extraneous parcel lot line
1 Click Parcel Segment tab
2 Select the back lot line of parcel 105 as the cutting edge. Press Enter.
3 Select the lot line that extends past parcel 105 as the object to trim.
378 | Chapter 10 Parcels Tutorials
Edit Geometry panel Trim.