2011

4 Add any additional properties you want, and finish defining the object
class.
To specify that an object class can be used only as a base class
1
Define the object class (page 120).
2 In the
Define Object Classification dialog box (page 1785), select Use As
Base Object Classification Only.
Users can select objects using the base object class, but they cannot create
objects using it.
Quick Reference
FEATUREDEF
Defines a new object class based on an example in thecurrent drawing
Click Setup ➤ Classification Tools ➤ Define Object
Class.
Menu
Define Object Class
Icon
FEATUREDEFCommand Line
In Map Explorer, under Current Drawing, right-click
Object Classes ➤ Define Object Class
Task Pane
Define Object Classification dialog boxDialog Box
Specifying Ranges and Defaults
When you define an object class, you can specify a range of allowable values
and a default value for new objects created using the object class.
NOTE Object classification affects drawing objects only. For information about
classification methods for geospatial feature data, see
Overview of Geospatial Data
(page 551)
When someone creates a new object using this object class, AutoCAD Map
3D creates the object using the current settings for the property. If the current
124 | Chapter 2 Setting Up