Storage of creation and change date, user ID , classify attribute, etc .

创建和更改日期，用户id ，分级属性，等的存储。

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You can also classify non-DITA content such as HTML and PDF files by referring to the files with the topicref element, but identifying the content format with the format attribute.

也可以对非 DITA 内容（例如 HTML 和 PDF 文件）进行分类，方法是用 topicref 元素引用这些文件，但是要用 format 属性标识内容的格式。

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For the treatment of continuous attribute, select a kind of heuristic segmentation point selection method to classify the continuous attribute.

在连续属性值的处理方面，选用一种启发式的分割点选择方法对连续属性进行分类。

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