register --quiet table_io allow table_io start echo on break named_fields.swap c f dd -a browse cd 1/field1 ls track info undo browse 1 cd field1 ls track info undo browse cd 2/field2 ls track info undo browse cd result/field2 ls track info undo browse 2 cd field2 ls track info undo browse 2 track field2 info undo browse 2 track field3 quit quit quit -y