Product specifications

3BDS011222-510 B 521
Appendix A Object Types
Reference Information for Object Types
The chapter contains detailed information about object type configuration, and
explains the mechanisms used when creating and maintaining instances of an
object type.
The Object Type Structure contains all object types, which are defined in the
system. The object types are structured into different folders called Object Type
Groups.
Object Type Groups
All object types groups are instantiated from the predefined type Object Type
Group, or a subtype of it. An example of such a subtype is the Library Version
object.
It is possible to refer to an object type group when you specify the allowed children
below an object on the Child Control tab. Instead of enumerating all allowed object
types you can specify an object type group instead (see also Child Control Tab on
page 532).
The object type group is set up as an aspect category, and all objects in the group
will automatically get an aspect of this category. Aspects can therefore be inherited
from the parent group. However, use of this functionality is no longer
recommended. The preferred ways of inheriting aspects to object types is either to
use supertypes or to use aspect groups.
Object Types
All object types are instantiated from the predefined object type Object Type (or a
subtype of it).