tapelabel 		JL6145
dataSource		ganglog		# ganglog, mt, spectro
device			/dev/mt/tps4d3nrnsvc		# 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
	MT,		# all files for a single MT night
	SPECTRO,	# all files for a single spectro night
	TPM		# all TPM files for a single night
} TARCONTENTS;


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


tarfile 1 LOG 52721
tarfile 2 ASTROGANG 3801
tarfile 3 PHOTOGANG 3801
tarfile 4 ASTROGANG 3802
tarfile 5 PHOTOGANG 3802
tarfile 6 ASTROGANG 3803
tarfile 7 PHOTOGANG 3803
tarfile 8 ASTROGANG 3804
tarfile 9 PHOTOGANG 3804
tarfile 10 ASTROGANG 3805
tarfile 11 PHOTOGANG 3805
tarfile 12 ASTROGANG 3806
tarfile 13 PHOTOGANG 3806
tarfile 14 ASTROGANG 3807
tarfile 15 PHOTOGANG 3807
tarfile 16 SPECTRO 52721
tarfile 17 TPM 52721