set {TAIL ~ one or more soft limits} to define a second range within {HEAD ~ the first range}; and 
set { TAIL ~ one or more soft limits } to define a second range within { HEAD ~ the first range } ; and
OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH