怎么划分这个句子的结构? 结构

carl2009

The standard has had substantial changes made to its structure and contents.

had及made如何理解？

carl2009

明白了，非常感谢！

carl2009

今天收到一个邮件，说的关于ISO9001的“操作说明书”的问题，其中有以下几句话：
You may need more detail than that described in the procedures. Many businesses include work instructions to aid in training, to reduce mistakes, a point of reference for jobs, etc.（include ... to ...,什么意思？对整个句子好象解释不通。）

Correct application of these items will help keep your QMS running smoothly and allow for easier audits. （更加容易被审核通过？——字面是这样的吗？不懂。） And we all like happy auditors!我们都喜欢快乐的审核员！（有这种说法吗？）

关于黑体部分不太清楚是什么意思，怎么翻译？谢谢指教！

carl2009

6# 星期一
谢谢指点！