IFC Release 2x4 14. feb. 2011
Værktøj indeholdende IFC Release 2x4 Candidate 2 - med introduktion, indhold, opbygning, indekser, indbyrdes linking, reference til internationale standarder mv.
Den engelske beskrivelse af siden lyder således:
"This document contains the specification of the IFC standard. The specification consists of the data schema, represented as an EXPRESS schema specification, and reference data, represented as XML definitions of property and quantity definitions."

