| 
 Component  | 
 Description  | 
|---|---|
| 
 Feature lines  | 
 Grip appears at each vertex. Move the grip as you would when you edit a polyline.  | 
| 
 Projection lines  | 
 Grip appears on projection lines. Slide the projection line along the footprint to change the start or end point of the region.  | 
| 
 Elevation points  | 
 Grip appears at any location on a feature line or lot line to mark an intermediate elevation point. Move the point to its correct location.  | 
Grips do not appear on grading component lines that are constrained or locked by the grading criteria.