To Trim AEC Polygons

1. Select the AEC polygon to be trimmed.
2. Click AEC Polygon ribbon contextual tab Modify panel Trim.
3. Specify a start point for the trim line. This line cuts through the AEC polygon, creating the area to trim and the area to retain.
4. Specify an endpoint for the trim line.
5. Select the side of the AEC polygon to be trimmed.