DOS BACKUP Control Information

	BACKUPID.@@@ Format

     Offset Size		Description
	00   byte   Disk sequence flag:
			00  indicates disk is not the last backup diskette
			FF  indicates disk is the last backup diskette
	01   word   Floppy disk sequence number (Intel format)
	03   word   Backup year, four digits (Intel format)
	05   byte   Day of month (1-31)
	06   byte   Month of year (1-12)
	07   dword  System time if /T was specified (see FILE ATTRIBUTES)
	0B 117bytes Unused


	Backup File Header

     Offset Size		Description
	00   byte   Disk sequence flag:
			00  indicates disk is not the last backup diskette
			FF  indicates disk is the last backup diskette
	01   byte   Floppy disk sequence number
	02  3bytes  Unused
	05 64bytes  Full pathname (without drive designator)
	45 14bytes  Unused
	53   byte   Length of file path name at offset 05 plus 1
	54 44Bytes  Unused