D.2.1.19 IfcSystem

IfcSystemIfcSystemIfcGloballyUniqueIdIfcOwnerHistoryIfcPersonAndOrganizationIfcPersonIfcOrganizationIfcApplicationIfcOrganizationIfcStateEnumIfcChangeActionEnumIfcTimeStampIfcLabelIfcTextIfcRelAssociatesConstraintIfcLabelIfcObjectiveIfcMetricIfcTableIfcLabelIfcTableColumnIfcLabelIfcTextIfcContextDependentUnitIfcReferenceIfcObjectiveEnumIfcRelAssociatesClassificationIfcClassificationReferenceIfcIdentifierIfcClassificationIfcLabelIfcLabelIfcIdentifierIfcRelAssignsToGroupIfcProduct