Use this procedure to add a ring to a material boundary.
A material boundary can consist of more than one closed polyline. For example, you could use one polyline to highlight a wall detail and another polyline to highlight a window detail in another location.
- Draw a polyline for the new material boundary ring.
- Select the material boundary to add a new ring to, and click

.
You are now in edit in place mode. The material boundary is highlighted, and the grips are displayed.
- Click :

.
- Select the polyline you drew in Step 1.
- Enter y (Yes) to erase the polyline, or n (No) to keep the polyline in the drawing.
- To exit edit in place mode,
if you want to.. then click… save all changes
discard all changes