我们将用php编写示例程序，但是其基本概念适用于所有的编程语言。
Programming examples use PHP, but the basic concepts apply for any programming language.
相同的基本概念也适用于计算机程序开发技术，包括以Python编程语言编写的程序。
The same underlying concept applies to the art of developing computer programs, including programs written in the Python programming language.
本教程是为如下开发人员设计的，他们理解XML的基本概念，并且准备继续编写应用程序代码，使用文档对象模型（Document Object Model，DOM）来操作 XML。
This tutorial is designed for developers who understand the basic concept of XML and are ready to move on to coding applications to manipulate XML using the Document Object Model (DOM).
本教程是为如下开发人员设计的，他们理解XML的基本概念，并且准备继续编写应用程序代码，使用文档对象模型（Document Object Model，DOM）来操作 XML。
This tutorial is designed for developers who understand the basic concept of XML and are ready to move on to coding applications to manipulate XML using the Document Object Model (DOM).
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