tapelabel 		JL0692
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 51132
tartapelog 1 ASTROGANG 236
tartapelog 2 PHOTOGANG 236
tartapelog 3 ASTROGANG 237
tartapelog 4 PHOTOGANG 237
tartapelog 5 ASTROGANG 238
tartapelog 6 PHOTOGANG 238
tartapelog 7 ASTROGANG 239
tartapelog 8 PHOTOGANG 239
tartapelog 9 ASTROGANG 240
tartapelog 10 PHOTOGANG 240
tartapelog 11 ASTROGANG 241
tartapelog 12 PHOTOGANG 241
tartapelog 13 ASTROGANG 242
tartapelog 14 PHOTOGANG 242
tartapelog 15 ASTROGANG 243
tartapelog 16 PHOTOGANG 243
tartapelog 17 ASTROGANG 245
tartapelog 18 PHOTOGANG 245