Stand-alone objects (prototypes)
object(Object)
object(Object,
    implements(Protocols))
object(Object,
    imports(Categories))
object(Object,
    implements(Protocols),
    imports(Categories))
Prototype extensions
object(Object,
    extends(Objects))
object(Object,
    implements(Protocols),
    extends(Objects))
object(Object,
    imports(Categories),
    extends(Objects))
object(Object,
    implements(Protocols),
    imports(Categories),
    extends(Objects))
Class instances
object(Object,
    instantiates(Classes))
object(Object,
    implements(Protocols),
    instantiates(Classes))
object(Object,
    imports(Categories),
    instantiates(Classes))
object(Object,
    implements(Protocols),
    imports(Categories),
    instantiates(Classes))
Classes
object(Object,
    specializes(Classes))
object(Object,
    implements(Protocols),
    specializes(Classes))
object(Object,
    imports(Categories),
    specializes(Classes))
object(Object,
    implements(Protocols),
    imports(Categories),
    specializes(Classes))
Classes with metaclasses
object(Object,
    instantiates(Classes),
    specializes(Classes))
object(Object,
    implements(Protocols),
    instantiates(Classes),
    specializes(Classes))
object(Object,
    imports(Categories),
    instantiates(Classes),
    specializes(Classes))
object(Object,
    implements(Protocols),
    imports(Categories),
    instantiates(Classes),
    specializes(Classes))
Starting object directive.
Stand-alone objects (prototypes)
object(+object_identifier)
object(+object_identifier,
    implements(+implemented_protocols))
object(+object_identifier,
    imports(+imported_categories))
object(+object_identifier,
    implements(+implemented_protocols),
    imports(+imported_categories))
Prototype extensions
object(+object_identifier,
    extends(+extended_objects))
object(+object_identifier,
    implements(+implemented_protocols),
    extends(+extended_objects))
object(+object_identifier,
    imports(+imported_categories),
    extends(+extended_objects))
object(+object_identifier,
    implements(+implemented_protocols),
    imports(+imported_categories),
    extends(+extended_objects))
Class instances
object(+object_identifier,
    instantiates(+instantiated_objects))
object(+object_identifier,
    implements(+implemented_protocols),
    instantiates(+instantiated_objects))
object(+object_identifier,
    imports(+imported_categories),
    instantiates(+instantiated_objects))
object(+object_identifier,
    implements(+implemented_protocols),
    imports(+imported_categories),
    instantiates(+instantiated_objects))
Classes
object(+object_identifier,
    specializes(+specialized_objects))
object(+object_identifier,
    implements(+implemented_protocols),
    specializes(+specialized_objects))
object(+object_identifier,
    imports(+imported_categories),
    specializes(+specialized_objects))
object(+object_identifier,
    implements(+implemented_protocols),
    imports(+imported_categories),
    specializes(+specialized_objects))
Class with metaclasses
object(+object_identifier,
    instantiates(+instantiated_objects),
    specializes(+specialized_objects))
object(+object_identifier,
    implements(+implemented_protocols),
    instantiates(+instantiated_objects),
    specializes(+specialized_objects))
object(+object_identifier,
    imports(+imported_categories),
    instantiates(+instantiated_objects),
    specializes(+specialized_objects))
object(+object_identifier,
    implements(+implemented_protocols),
    imports(+imported_categories),
    instantiates(+instantiated_objects),
    specializes(+specialized_objects))
:- object(list).
:- object(list,
    implements(listp)).
:- object(list,
    extends(compound)).
:- object(list,
    implements(listp),
    extends(compound)).
:- object(object,
    imports(initialization),
    instantiates(class)).
:- object(abstract_class,
    instantiates(class),
    specializes(object)).
:- object(agent,
    imports(private::attributes)).