interface-type is root element of the Standard OpenDOF Interface Repository. A DOFString type A DOFBoolean type Unit of measure for a DOFNumerical type. A DOFDatetime type A DOFGuid type A DOFBlob type A DOFInterfaceID type A DOFObjectID type A list of DOFInterface Properties. A DOFInterface Property. A list of DOFInterface Methods. A DOFInterface Method. A list of DOFInterface Types that are input parameters. A list of DOFInterface Events. A DOFInterface Event. A list of DOFInterface Exceptions. A DOFInterface Exception. A list of DOFInterface Types that are output parameters. A DOFInterface.