The event object data field will be the field constructor of the intermediate object.

事件对象数据字段将成为中间对象的字段构造器。

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The event data itself is contained within the CBE as a payload field that can either leverage predefined payload structures or be extended to create new payloads.

事件数据本身也包含在 CBE 中，是一个能利用预定义负载结构或通过扩展生成新负载的负载字段。

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You can set an event handler for the first time the user enters data into the main content field. Figure 2 illustrates.

可以设置用户首次向主要的内容字段输入数据时的事件处理程序，如图2所示。

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