To display only the objects of a particular category in the object list:
•Select the desired category in the View[Object List] > Show Object Categories selection box.
To display objects from multiple categories in the object list:
1.Select Multiple categories in the selection box View[Object List] > Show Object Categories.
2.In the dialog box that appears, select the categories to be displayed.
To display objects from all categories in the object list:
•Select All in the selection box View[Object List] > Show Object Categories.