0.5 An element enabling authors to give attribution for roles not supported by the Rhaptos/Connexions roles system (roles like 'funder', 'sponsor'). An element to link to works from which the context work was derived. An attribute in the Connexions system-info namespace to express whether the 'derived-from' element to which it is attached contains the full chain of content parentage or just the immediate parents of the context document. Supported values are: entire-chain first-ancestor-only Child 'derived-from' elements denote more remote ancestors of the document. An attribute whose value is the URL of a repository containing the context object.