Types of Objects Created with AutoCAD Civil 3D
Using the AutoCAD Civil Object Enabler for Civil 3D 2009 Object Data
Supported AutoCAD Commands
Using the Object Properties Manager in an Enabled AutoCAD Session
You can view certain information regarding AutoCAD Civil 3D objects in the AutoCAD Object Properties window.
Use the Modify 
Properties command,
or right-click an object and select Properties to open the Properties
window. When using the Properties window in an enabled AutoCAD session,
you can change certain AutoCAD properties.