This draft document is being circulated for comment. Note that other groups may also distribute working documents as Internet Drafts.
Internet Drafts are draft documents valid for a maximum of six months.
They may be updated, replaced, or obsoleted by other documents at any time. Please check the abstract listing in each Internet Draft directory for the current status of this or any other Internet Draft. The present approach to these compound object has been to define specific multipart subtypes for each new object. In keeping with the MIME philosophy of having one mechanism to achieve the same goal for different purposes, one single mechanism should be defined for such aggregate or compound objects. Multipart content-types cannot have encodings.