This specification standardizes three media types-- application/xml, application/xml-external-parsed-entity, and application/xml-dtd--for use in exchanging network entities that are related to the Extensible Markup Language (XML) while defining text/xml and text/ xml-external-parsed-entity as aliases for the respective application/ types. This specification also standardizes the ’+xml ’ suffix for naming media types outside of these five types when those media types represent XML MIME entities. Status of This Memo This is an Internet Standards Track document. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for pub...