2011

NOTE Object classification affects drawing objects only. For information about
classification methods for geospatial feature data, see
Overview of Geospatial Data
(page 551)
Editing Object Class Definitions
To define an object class, you must have
Alter Object Class Privileges (page
82).
WARNING Only one person should edit object class definitions at a time. If two
people edit at the same time, one set of edits may be lost.
If someone has recently edited the definition file, quit AutoCAD Map 3D and
restart to get the updated definitions.
Renaming an Object Class
When you rename an object class, you change the name only in the object
class definition file. Any objects tagged with the object class name are
unchanged. Since these objects point to a name that no longer exists in the
object class definition file, the objects become undefined. You can search for
these undefined objects and update their object class name.
See also:
■
Using Base Object Classes (page 122)
■ Modifying an Object Class Definition (page 127)
■ Attaching an Object Class Definition File (page 995)
NOTE To define an object class, you must have Alter Object Class privileges (page
82).
NOTE Object classification affects drawing objects only. For information about
classification methods for geospatial feature data, see
Overview of Geospatial Data
(page 551)
To define an object class
1 Select a sample object for the object class.
The sample object must have the properties, links, and attributes that
you want to include in the definition of the object class.
120 | Chapter 2 Setting Up