.. _exhale_define__ifc4x2-definitions_8h_1aa2fee8c7e1ff18ae9480faa965a819f1:

Define SCHEMA_IfcConstraint_Description_IS_OPTIONAL
===================================================

- Defined in :ref:`file_src_ifcparse_Ifc4x2-definitions.h`


Define Documentation
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.. doxygendefine:: SCHEMA_IfcConstraint_Description_IS_OPTIONAL