.. _exhale_define__ifc4x3__rc1-definitions_8h_1a57b93c542e8ce0ab8a032b31f857619d:

Define SCHEMA_IfcSurfaceStyleRefraction_RefractionIndex_IS_OPTIONAL
===================================================================

- Defined in :ref:`file_src_ifcparse_Ifc4x3_rc1-definitions.h`


Define Documentation
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.. doxygendefine:: SCHEMA_IfcSurfaceStyleRefraction_RefractionIndex_IS_OPTIONAL