In 4.4.2: "Subject to which subtypes are specified, new properties are available or are mandatory. Multiple typing of documents is allowed unless an owl:disjoint statement between these classes is present. A ct:FolderDocument represents a document that is present in a folder and may comprise multiple files. A ct:EncrypedDocument class is used to state that a document is encrypted. A ct:SecuredDocument can be used when a document is secured by a hash using an algorithm such as for example SHA256."
ICDD uses RDF/XML
In 4.4.2: "Subject to which subtypes are specified, new properties are available or are mandatory. Multiple typing of documents is allowed unless an owl:disjoint statement between these classes is present. A ct:FolderDocument represents a document that is present in a folder and may comprise multiple files. A ct:EncrypedDocument class is used to state that a document is encrypted. A ct:SecuredDocument can be used when a document is secured by a hash using an algorithm such as for example SHA256."