.. _exhale_define__ifc4x3__rc1-definitions_8h_1a29756d18d01a4d1e8bf0c3382321e8f3:

Define SCHEMA_IfcMaterialConstituent_Fraction_IS_OPTIONAL
=========================================================

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


Define Documentation
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.. doxygendefine:: SCHEMA_IfcMaterialConstituent_Fraction_IS_OPTIONAL