IFC2x3 Release Summary
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The IFC2x3 release has been published in Feb 2006 as a successor of IFC2x2 Edition 2. It soon has been established as the common ground of IFC implementations, combining previous IFC2x and IFC2x2 implementation threads. IFC2x3 is mainly a quality improvement release not adding scope but refinements on top of IFC2x2.
Since July 2007 the IFC2x3 release has been superseded by the IFC2x3 Technical Corrigendum 1 - a fully upward and downward compatible corrigendum with mainly documentation improvements. It is strongly recommended to download and use IFC2x3 Technical Corrigendum 1 from now on.