Metadata Explorer properties (General tab)

The General tab displays the object hierarchy of the class named at the top of the tab.

Allows Instances
Whether the class allows instances of itself to be created.
Has Persistence
Whether the class can be made persistent—that is, can be stored in the database.
Display Property Page for Selected Item
Select an object in the Metadata Explorer and click this button at any time to load another window displaying the selected object's property description's property sheet.
Class Hierarchy
The Metadata Explorer shows the class hierarchy of the class object named at the top of the General tab.