document : checkpoint address report(s?) doctrailer

report : report1 | report2 | report3 | ...

report1 : lt[100] report1_cost_centre(s?) lt[200]

report1_cost_centre : lt[300] report1_txn(s?) lt[400]

report1_txn : lt[500] lt[600] page_break(?) lt[700]

lt : "<LT$arg[0]>" lt_data

lt_data : /[^\\]*/ lt_end {$return = $item{__PATTERN1__}
...