空间内的主题直接对发布到该空间的各种主题进行组织，和使用目录层次结构组织其文件的文件系统非常相似。

The topics within a space simply organize the jumble of messages published to the space, much like a file system organizes its files using a directory hierarchy.

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单击该链接将允许您向上浏览文件系统层次结构，直到您到达最高的一级：根目录。

Clicking this link allows you to move up the file system hierarchy until you eventually get as high as you can possibly go: the root directory.

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图1显示了AIX文件系统的层次结构。

Figure 1 shows the AIX file system hierarchy.

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