The references section has been split (which I think makes sense). The normative part of the references:
The following documents contain definitions or specifications which are necessary to understand this document properly: contain references to [IMAP-IMPLEMENTATION] Leiba, B. "IMAP Implementation Recommendations", RFC 2683, September 1999. [IMAP-MULTIACCESS] Gahrns, M. "IMAP4 Multi-Accessed Mailbox Practice", RFC 2180, July 1997. both of which are informational RFCs. This seems strange to me. Larry
