Definition from ISO/CD 10303-42:1992: This select type collects together both versions of the placement as used in two dimensional or in three dimensional Cartesian space. This enables entities requiring this information to reference them without specifying the space dimensionality.

NOTE Corresponding STEP type: axis2_placement, please refer to ISO/IS 10303-42:1994, p. 19 for the final definition of the formal standard.
HISTORY New Type in IFC Release 1.5

EXPRESS specification:

TYPE IfcAxis2Placement = SELECT
( IfcAxis2Placement2D,

References (2):

Name Type Referred through Express-G
IfcConic Entity
Attribute 'Position'
Diagram 5
IfcRepresentationMap Entity
Attribute 'MappingOrigin'
Diagram 2