- * Fragments the message into fragments of size "mtu" or
- * less. Calls 'proc' on each un-acknowledged fragment,
- * using both the expected 'delay' between messages and
- * acknowledgements and the given 'tracker' to guide the
- * frequency of calls to 'proc'.
+ * Fragments the message into fragments of size @a mtu or
+ * less. Calls @a proc on each un-acknowledged fragment,
+ * using both the expected @a msg_delay between messages and
+ * acknowledgements and the given @a tracker to guide the
+ * frequency of calls to @a proc.