让我们从一个简单的示例开始：使用SVN跟踪目录的内容。

Let's start with a simple common example: tracking a directory's contents with SVN.

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但是可通过一个配置文件更改配置跟踪输出目录。

However the trace output directory can be configured through a configuration file change.

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例如，假定您希望在尝试创建目录时跟踪错误。

For example, imagine that you want to trap an error when trying to create a directory.

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