# 5.4.2.17 IfcPhysicalOrVirtualEnum

## 5.4.2.17.1 Semantic definition

This enumeration defines the different types of space boundaries in terms of its physical manifestation. A space boundary can either be physically dividing or can be a virtual divider.

## 5.4.2.17.3 Formal representation

TYPE IfcPhysicalOrVirtualEnum = ENUMERATION OF
(PHYSICAL
,VIRTUAL
,NOTDEFINED);
END_TYPE;