!!! Uniform Resource Identifier URIs are defined as sequences of characters chosen from a limited subset of the repertoire of ASCII characters both for transmission in network protocols and representation in spoken and written human communication. Defined in RFC 2396. * (http://ftp.ics.uci.edu/pub/ietf/uri/ IETF Working Group) * (http://ftp.ics.uci.edu/pub/ietf/uri/rfc2396.txt RFC 2396) See also [URL].