The "Universal Resource Name" is currently (March 1993) under development in the IETF. A requirements specification is in preparation. It currently looks as though it will be a short string suitable for encoding in URI syntax, for which case the "urn:" prefix is reserved. The URN shall be encoded precisely as defined in the (future) URN standard, except in that: These rules of course apply to any URI scheme. It is of course possible that the URN syntax will be chosen such that the URI encoding will be a 1-1 transcription.

An example might be a name such as


but the reader should refer to the latest URN drafts or specifications.