IfcClassificationReferenceSelect

BACnet MVD

#### IfcClassificationReferenceSelect

Natural language names

| Classification Reference Select
| Sélection de référence de classification

Change log

Item | SPF | XML | Change | Description
--- | --- | --- | --- | ---
IFC2x3 to IFC4
IfcClassificationReferenceSelect |  |  | ADDED |

##### Semantic definitions at the type

Type definition

The IfcClassificationReferenceSelect enables selection of whether a classification reference is a subset of another classification reference or is a top level entry of a classification source.

> HISTORY New Select Type in IFC2x

Select definition

Type | Description
--- | ---
IfcClassificationReference |
IfcClassification |

##### Formal representations

XML Specification
`<xs:group name="IfcClassificationReferenceSelect">
<xs:choice>
<xs:element ref="ifc:IfcClassification"/>
<xs:element ref="ifc:IfcClassificationReference"/>
</xs:choice>
</xs:group>
`
EXPRESS Specification
`TYPE IfcClassificationReferenceSelect = SELECT (
IfcClassificationReference,
IfcClassification);
END_TYPE;

EXPRESS-G diagram

`

References: IfcClassificationReference

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