The tangible computer readable storage medium 1, wherein {HEAD ~ the information} that identifies {TAIL ~ the namespace} is shared between multiple namespaces 
identifies
The tangible computer readable storage medium 1 , wherein { HEAD ~ the information } that identifies { TAIL ~ the namespace } is shared between multiple namespaces
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH