+ /** Allows modules to synchronize data which relates to channels during a netburst.
+ * When this function is called, it will be called from the module which implements
+ * the linking protocol. This currently is m_spanningtree.so. A pointer to this module
+ * is given in Module* proto, so that you may call its methods such as ProtoSendMode
+ * (see below). This function will be called for every user visible on your side
+ * of the burst, allowing you to for example set modes, etc. Do not use this call to
+ * synchronize data which you have stored using class Extensible -- There is a specialist
+ * function OnSyncUserMetaData and OnSyncChannelMetaData for this!
+ *
+ * For a good example of how to use this function, please see src/modules/m_chanprotect.cpp
+ *
+ * @param chan The channel being syncronized
+ * @param proto A pointer to the module handling network protocol
+ * @param opaque An opaque pointer set by the protocol module, should not be modified!
+ */