.. _exhale_define__ifc4x3__rc1-definitions_8h_1afa7134d58075c9ce378872022dde74c7:

Define SCHEMA_IfcChimney_PredefinedType_IS_OPTIONAL
===================================================

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


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


.. doxygendefine:: SCHEMA_IfcChimney_PredefinedType_IS_OPTIONAL