.. _exhale_define__ifc4x3__rc1-definitions_8h_1a2c68b14ce31a3b689a79efbc8cd9e30c:

Define SCHEMA_IfcLibraryReference_Description_IS_OPTIONAL
=========================================================

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


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


.. doxygendefine:: SCHEMA_IfcLibraryReference_Description_IS_OPTIONAL