{HEAD ~ The message} is stored in the hierarchical message store at the one such index node and {TAIL ~ the one such storage node} 
is stored at
{ HEAD ~ The message } is stored in the hierarchical message store at the one such index node and { TAIL ~ the one such storage node }
HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH REL OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL