A unit of data appended to every VFC (variable-with-fixed-control) or variable- length record, regardless of file organization. The field contains the length of the record to which it is attached.

• 附加在每个具有固定控制可变长度(VFC)或可变长度的记录上的一个数据单元，它与文档的结构无关。该字段含有其所属记录的长度。