id	description	section	req	max_loop	max_usage	pos
DK	Docket Header	H	M	0	1	1
PRI	External Reference Identifier	H	M	0	1	2
DM	Demurrage/Detention/ Storage Rate	H	O	0	1	3
SC	Docket Sub-Level	H	O	10	1	4
DM	Demurrage/Detention/ Storage Rate	H	O	0	1	5