IfcNullStyle

BACnet MVD

#### IfcNullStyle

Natural language names

| Null Style
| Absence de style

##### Semantic definitions at the type

Type definition

The IfcNullStyle is an enumeration with a fixed value NULL to indicate that no presentation style is defined for the representation item.

> NOTE Definition according to ISO/CD 10303-46:1992
> The null style type specifies, that a representation item is not styled.

> NOTE Type adapted from null_style defined in ISO10303-46.

> HISTORY New enumeration type in IFC2x2.

> IFC4 CHANGE The enumeration is deprecated.

Enumeration definition

Constant | Description
--- | ---
NULL |

##### Formal representations

XML Specification
`<xs:simpleType name="IfcNullStyle">
<xs:restriction base="xs:string">
<xs:enumeration value="null"/>
</xs:restriction>
</xs:simpleType>
`
EXPRESS Specification
`TYPE IfcNullStyle = ENUMERATION OF (
NULL);
END_TYPE;

EXPRESS-G diagram

`

References: IfcPresentationStyleSelect

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