.. _exhale_define__ifc4x1-definitions_8h_1abdac64bac5a25cabc4230902f39d8abb:

Define SCHEMA_IfcGridPlacement_PlacementRefDirection_IS_OPTIONAL
================================================================

- Defined in :ref:`file_src_ifcparse_Ifc4x1-definitions.h`


Define Documentation
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.. doxygendefine:: SCHEMA_IfcGridPlacement_PlacementRefDirection_IS_OPTIONAL