.. _exhale_define__ifc4x3__rc1-definitions_8h_1aaa280d231e37f4ab5d31a486ea48a165:

Define SCHEMA_IfcBuiltSystem_LongName_IS_OPTIONAL
=================================================

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


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


.. doxygendefine:: SCHEMA_IfcBuiltSystem_LongName_IS_OPTIONAL