ATSC Interactive Services Standard (ISS) schema for extension of OIPF Content Access Download Descriptor Version: 1.0 Date: 12/12/2013 Namespace: http://www.atsc.org/XMLSchemas/iss-cadd-1 Information about the use of this schema can be found in ATSC standard A/105-2013. This schema imports the OIPF ContentAccessDownloadDescriptor schema, which has namespace "urn:oipf:iptv:ContentAccessDownloadDescriptor:2008-1", and location "iptv-ContentAccessDownloadDescriptor.xsd". This OIPF schema uses the OIPF AbstractContentAccessDescriptor file at location: iptv-AbstractContentAccessDescriptor.xsd which in turn includes additional OIPF schema files at locations: "csp-MarlinPrivateDataType.xsd" "csp-DRMPrivateDataType.xsd" "csp-HexBinaryPrivateDataType.xsd" All five of these schema files must be present to validate this "cadd" schema.