There are a lot of complexities with XML's character representation and handling that have caused unpleasant surprises for developers, and endless debate in the XML community.
在XML的字符表示和处理方面，有许多复杂问题，它们已经给开发人员带来了不愉快的意外，并导致XML社区无休止的争论。
Take Listing 9, which creates a collection of character documents, each containing the string representation of the character and its associated ASCII code.
以清单9为例，它创建一个字符文档集合，每个集合都包含字符的字符串表示形式及其关联的ASCII代码。
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