这个是关于word用法的文档，有时候急需要知道哪个功能的时候一下子不知道怎么用，查查这个文档就可以了，共同学习进步，-This is a document on word usage, and sometimes an urgent need to know which function when all of a sudden do not know how to use them, you can look up this document, the common learning prog