Take a look at instance-level operations first.
首先，我们看一下实例级操作。
Also provide some search engine index level operations.
同样还提供了一些搜索引擎索引级别的操作。
Use the box to perform form-level operations, such as selecting the form.
用这个框可以执行窗体级操作，如选择窗体。
Use the box to perform section-level operations, such as selecting the section.
使用该框可以执行节级操作，如选择节。
Use the box to perform section-level operations, such as selecting the section.
使用该框可以执行节级操作，如选择节。
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