determining if {HEAD ~ the feature instance} identified in {TAIL ~ a lock transfer request} by another session is locked by a short transaction lock; and if not, 
identified in
determining if { HEAD ~ the feature instance } identified in { TAIL ~ a lock transfer request } by another session is locked by a short transaction lock ; and if not ,
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH