.. _exhale_define__ifc2x3-definitions_8h_1a636f3fe055021ab52f291550c3433c34:

Define SCHEMA_IfcExtendedMaterialProperties_Description_IS_OPTIONAL
===================================================================

- Defined in :ref:`file_src_ifcparse_Ifc2x3-definitions.h`


Define Documentation
--------------------


.. doxygendefine:: SCHEMA_IfcExtendedMaterialProperties_Description_IS_OPTIONAL