Note that other groups may also distribute working documents as Internet-Drafts. Internet-Drafts are draft documents valid for a maximum of six months. Internet-Drafts may be updated, replaced, or obsoleted by other documents at any time. This syntax is basically the same as the URN syntax described in RFC 1630. This document does not cover any specific resolution schemes or the format of resolution results.
Syntax URNs are simple text strings.
When URNs appear in free text, or in other places where it is not known that they are URNs, they should be shown in a separate syntactic wrapper. Freestanding URNs that include any white space must be wrapped in this fashion. The same URN, appearing in a mail message, would look like The first and SchemeID fields are case insensitive. The case sensitivity and character set of the ElementID field depends on the value of the SchemeID field. URNs are often displayed and transmitted in the same media as URLs.