Use the Map Explorer tab in the Task pane to create the object class definition file. You can create this file in any map.
To create the definition file
Select the map2d.dwt template and click Open.
Create the object class definition file.
For example, navigate to the folder where you copied your tutorial files. Call the definition file MyDefinition.xml.
Object classes you define are now saved in the new definition file.
To continue this tutorial, go to Exercise 2: Define an object class.