UriSchemes/thismessage
"thismessage" is uriReg:schemeName of [ dc:description """defined for the sole purpose of resolving relative references within a multipart/related structure when no other base URI is specified"""; is uriReg:specifies of [ = <http://www.ietf.org/rfc/rfc2557.txt>; dc:title """MIME Encapsulation of Aggregate Documents, such as HTML (MHTML)"""; dc:creator [ dca:agentName "Palme, J."], [dca:agentName "Hopmann, A."], [dca:agentName "Shelness, N."]; inet:rfc "2557"; dc:date "1999-03"; ]; ] .
ProxyTopic; see IANA registry.----
See also other UriSchemes.
We're using NotationThree here, assuming TheUsualPrefixes.