On the command ribbon, click Boundary List .
The Boundary List dialog box displays.
To remove a boundary, select the boundary in the list, and then click Remove .
To remove all boundaries, click Remove All .
To add a new boundary, click Add , and then select a boundary in the graphic view or in the Workspace Explorer. You can also type the boundary name and an optional offset value in the Offset box or the Name box.
For more information, see Boundary List Dialog Box.