ZClass - Subobjects: Define suboject types. Description This view allows you to control what types of objects are addable within instances of your ZClass. Controls Select one or more of the listed meta-types to indicate that objects of these types can be added to instances of your ZClass. 'Objects should appear in folder lists' -- Controls whether or not instances of your ZClass appear as folders in the left Zope management frame. 'Change' -- Change subobject settings.