An object of the present invention is to provide a write once optical disc and a method and {HEAD ~ apparatus} for defining types of {TAIL ~ sessions} and sequential recording ranges for the disc 
An object of the present invention is to provide a write once optical disc and a method and { HEAD ~ apparatus } for defining types of { TAIL ~ sessions } and sequential recording ranges for the disc
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH