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IfcMaterialSelect

Definition from IAI: Selection of whether a material, a material layer set or a material list is assigned to an element.

SELECT
IfcMaterial
IfcMaterialList
IfcMaterialLayerSetUsage

ISSUE See issue and change log for changes made in IFC 2x.

EXPRESS specification:

TYPE IfcMaterialSelect = SELECT
( IfcMaterial,
IfcMaterialList,
IfcMaterialLayerSetUsage);
END_TYPE;