要定义主题，需要创建DITA题目(通常是内容题目)来标识内容的主题问题方面(请参阅图2)。

To define a subject, you create a DITA topic (typically a concept topic) to identify an aspect of the subject matter of your content (see Figure 2).

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SKOS允许定义具体主题问题范围的主题(如果希望，还可以把这些主题组织成分类系统)，然后对每部分内容进行分类，指出它的主题。

SKOS lets you define the subjects for a particular subject matter area (organizing these subjects as a taxonomy if desired) and then classify each piece of content to indicate its subject.

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问题是，他们远远超过10的面孔，没有办法回到我以前的设置一旦我加载自定义主题。

The problem is that they set much more than 10 faces and there's no way to get back to my previous setup once I've loaded a custom theme.

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