The Parcels collection provides access to the Parcel database and allows a defined Parcel to be imported in the drawing. Similar to an Alignment, a Parcel is made up of geometric entities that can be enumerated using the ParcelEntites collection.
Closing Parcel Perimeters
When defining a Parcel, the perimeter is not automatically closed for you. A Parcel that has not been closed will return an area of 0.0 square units.
The Parcel database supports multi-user access with locks. Unlike Alignments, the locking occurs automatically on a command by command basis. A Parcel cannot be locked for the duration of a design session.