tapelabel 		JL0809
dataSource		ganglog		# ganglog, mt, spectro
device			/dev/mt/tps1d6nrnsvc		# 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; 


tarfile 0 LOG 51136
tarfile 1 ASTROGANG 267
tarfile 2 PHOTOGANG 267
tarfile 3 ASTROGANG 269
tarfile 4 PHOTOGANG 269
tarfile 5 ASTROGANG 270
tarfile 6 PHOTOGANG 270
tarfile 7 ASTROGANG 271
tarfile 8 PHOTOGANG 271
tarfile 9 ASTROGANG 272
tarfile 10 PHOTOGANG 272
tarfile 11 ASTROGANG 273
tarfile 12 PHOTOGANG 273
tarfile 13 ASTROGANG 274
tarfile 14 PHOTOGANG 274