IFC (IFC4X3_ADD2) official IfcBoolean Semantic definition

IfcBoolean is a defined data type of simple data type Boolean. It is required since a select type (IfcSimpleValue) cannot directly include simple types in its select list. A Boolean type can have value TRUE or FALSE.

Type: BOOLEAN Formal representation

TYPE IfcBoolean = BOOLEAN;
END_TYPE; References

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