它们或者不出现在模型查询主题中，或者是对用户隐藏的。

Either they are not included in the model query subject, or they are hidden from the user.

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对主题的另一变更是隐藏某些动作。

The other change to the theme is to hide certain actions.

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第一列列出主题，此列是隐藏的，仅用于设置排序规则(参见图2)。

The first column, which lists the subject, is hidden and used only for setting up a sorting rule (see figure 2).

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