Applicability - which entities this specification applies to
OptionaldescriptionOptional description
Unique identifier for this specification
OptionalidentifierIdentifier (optional external reference)
OptionalifcThe raw @ifcVersion attribute string, before tokenisation and
normalisation. The audit module uses this to flag tokens that were
silently dropped because they didn't map to a recognised version.
IFC schema versions this applies to
OptionalinstructionsInstructions for compliance
OptionalmaxMaximum occurrences ("unbounded" or number, default: unbounded)
OptionalminMinimum occurrences (default: 0 = no minimum)
Human-readable name
Requirements - what applicable entities must satisfy
Single specification within an IDS document