From 6a4afe20bd308ca685401e780b760af9194ac91c Mon Sep 17 00:00:00 2001
From: Steve Kille
+ Servers supporting the capabilities necessary to enable MIX clients MUST advertise this. A client wishing to use MIX MUST check for this capability in the server before using MIX. The capability is represented by the 'urn:xmpp:mix:account:0' feature. +
+Most interaction between a MIX client and a MIX channel is directly between the client and the channel. The participant's server relays the message but does not modify the messages. In particular configuration management and discovery is direct. Interaction will be direct, unless explicitly stated otherwise.