.. _exhale_define__ifc4x3__rc1-definitions_8h_1a07f316bf415019a79a3ed798905be0cc:

Define SCHEMA_IfcRoot_OwnerHistory_IS_OPTIONAL
==============================================

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


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


.. doxygendefine:: SCHEMA_IfcRoot_OwnerHistory_IS_OPTIONAL