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