本教程详细讨论XPath规范，XPath允许您使用类似于目录的语法指定XML文档中的特定部分。

This tutorial details the XPath specification, which allows you to specify particular sections of an XML document using a directory-like syntax.

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关于如何正确使用这些建模元素的详细信息，请参阅Business Modeler的文档。

For more information on how to correctly use these modeling elements, see the Business Modeler documentation.

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虽然XPath不是php工具包中速度最快的XML API，但是当您手上拥有详细记录的XML文档时它是其中最易于使用的。

While XPath is not the fastest XML API in the PHP toolkit, it is among the easiest to use when you have a well-documented XML document on hand.

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