tapelabel 		JL0860
dataSource		ganglog		# ganglog, mt, spectro
device			/dev/mt/tps0d3nrnsvc		# tape drive

typedef enum {
        ASTROGANG, 	# GANG files for a single imaging run
        PHOTOGANG,	# GANG files for a single imaging run
	LOG,		# log files for a single imaging night
	SPECTRO,	# all files for a single spectro night
	MT		# all files for a single MT night
} TARCONTENTS;


typedef struct {
   int filemarks;		# number of filemakrs to skip to get here
   int id;			# mjd for logs, run number for gangs
   TARCONTENTS contents;	# GANG, LOG, SPECTRO, MT
} TARFILE; 


tartapelog 0 LOG 51139
tartapelog 1 ASTROGANG 290
tartapelog 2 PHOTOGANG 290
tartapelog 3 ASTROGANG 291
tartapelog 4 PHOTOGANG 291
tartapelog 5 ASTROGANG 292
tartapelog 6 PHOTOGANG 292
tartapelog 7 ASTROGANG 293
tartapelog 8 PHOTOGANG 293
tartapelog 9 ASTROGANG 294
tartapelog 10 PHOTOGANG 294
tartapelog 11 ASTROGANG 295
tartapelog 12 PHOTOGANG 295
tartapelog 13 ASTROGANG 296
tartapelog 14 PHOTOGANG 296
tartapelog 15 ASTROGANG 297
tartapelog 16 PHOTOGANG 297
tartapelog 17 ASTROGANG 298
tartapelog 18 PHOTOGANG 298
tartapelog 19 ASTROGANG 299
tartapelog 20 PHOTOGANG 299
tartapelog 21 ASTROGANG 300
tartapelog 22 PHOTOGANG 300