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IfcObjectTypeEnum

Definition from IAI: This enumeration defines the applicable object categories (i.e. the subtypes at the 2nd level of the IFC inheritance tree) . Attached to an object, it indicates to which subtype of IfcObject the entity referencing it would otherwise comply with.

HISTORY New entitiy in IFC Release 1.0, has been renamed from IfcProxyEnum in IFC 2x.
ISSUE See issue and change log for changes made in IFC Release 1.5 and 2x.

EXPRESS specification:

TYPE IfcObjectTypeEnum = ENUMERATION OF
( PRODUCT,
PROCESS,
CONTROL,
RESOURCE,
ACTOR,
GROUP,
PROJECT,
NOTDEFINED);
END_TYPE;

References (2):

Name Type Referred through Express-G
IfcProxy Entity
Attribute 'ProxyType'
Diagram 4
IfcRelAssigns Entity
Attribute 'RelatedObjectsType'
Diagram 2