a means for {TAIL ~ warning generation} that issues {HEAD ~ a warning} if an overload state is detected by said means for comparison; and 
a means for { TAIL ~ warning generation } that issues { HEAD ~ a warning } if an overload state is detected by said means for comparison ; and
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH