Uniform Resource Name
<World-Wide Web> (URN) 1. Any
URI which is not a
URL.
2. A particular scheme which is currently (1991-4) under development by the
IETF, which should provide for the resolution using
Internet protocols of names which have a greater persistence than that currently associated with Internet
host names or organisations (as used in
URLs). Uniform Resource Names will be URI schemes that improve on URLs in reliability over time, including authenticity, replication, and high availability.
When defined, a URN in sense 1 will be an example of a URN in sense 2.
(http://www.w3.org/pub/WWW/Addressing/Addressing.html).