The tag is a number designated by the programmer between 0 and 31 used to identify a transfer or for a group of transfers for status queries and sequencing operations.

标签是程序员指定的一个数字，范围在0到31之间，用来标识一次传输或一组传输，这可以用来进行状态查询和序列化操作。

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As it is, though, the code doesn't do anything to make sure that clumsy users or programmer bugs don't cause incorrectly formatted data to be put into the number field.

尽管如此，代码不能确保笨拙的用户或程序员漏洞不会导致未正确格式化的数据放入number字段中。

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For the individual programmer, the ability to quickly build the system while writing new code has a number of benefits.

对于程序员来说，写新代码的同时快速构建系统的能力具有许多好处。

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