To Delete a User Cell
You can determine
whether you only want to delete the entry in the database or the part DGN from
your hard disk.
If you don't delete the DGN, it is possible to adopt it again into the database at a later time.
Data entered for this user part is lost because it is stored in the database and not in the DGN. However, insertion points are maintained, because they are stored in the DGN as visible objects.