IfcPreDefinedItem

BACnet MVD

#### IfcPreDefinedItem

Natural language names

| Vordefiniertes Element
| Pre Defined Item
| Item pré-défini

Change log

Item | SPF | XML | Change | Description
--- | --- | --- | --- | ---
IFC2x3 to IFC4
IfcPreDefinedItem |  |  | MOVED | Schema changed from IFCPRESENTATIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.

##### Semantic definitions at the entity

Entity definition

A pre defined item is a qualified name given to a style or font which is determined within the data exchange specification by convention on using the Name attribute value (in contrary to externally defined items, which are agreed by an external source).

> NOTE The convention on using the Name value is defined at the subtypes of IfcPreDefinedItem and is part of the specification.

> NOTE Corresponding ISO 10303 name: pre_defined_item. Please refer to ISO/IS 10303-41:1994, page 137 for the final definition of the formal standard.

> HISTORY New entity in IFC2x2.

Attribute definitions

# | Attribute | Type | Cardinality | Description | B
--- | --- | --- | --- | --- | ---
1 | Name | IfcLabel |  | The string by which the pre defined item is identified. Allowable values for the string are declared at the level of subtypes. |  | X

##### Inherited definitions from supertypes

Entity inheritance
Attribute inheritance

# | Attribute | Type | Cardinality | Description | B
--- | --- | --- | --- | --- | ---
IfcPresentationItem
IfcPreDefinedItem
1 | Name | IfcLabel |  | The string by which the pre defined item is identified. Allowable values for the string are declared at the level of subtypes. |  | X

##### Formal representations

XML Specification
`<xs:element name="IfcPreDefinedItem" type="ifc:IfcPreDefinedItem" abstract="true" substitutionGroup="ifc:IfcPresentationItem" nillable="true"/>
<xs:complexType name="IfcPreDefinedItem" abstract="true">
<xs:complexContent>
<xs:extension base="ifc:IfcPresentationItem">
<xs:attribute name="Name" type="ifc:IfcLabel" use="optional"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
`
EXPRESS Specification
`ENTITY IfcPreDefinedItem
ABSTRACT SUPERTYPE OF(ONEOF(IfcPreDefinedColour, IfcPreDefinedCurveFont, IfcPreDefinedTextFont))
SUBTYPE OF (IfcPresentationItem);
Name : IfcLabel;
END_ENTITY;

EXPRESS-G diagram

`

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