{HEAD ~ The method} may further include displaying, on a display screen, {TAIL ~ the single message document} according to a conversational view based upon a perspective of the response level of a user within the mail thread 
{ HEAD ~ The method } may further include displaying , on a display screen , { TAIL ~ the single message document } according to a conversational view based upon a perspective of the response level of a user within the mail thread
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH