Operational control: any external file only designated vendors can operate on it, other vendors can not open the file.

操作可控：任何外发文件只有指定的协作厂商能够对其进行操作，其它协作厂商均无法打开该文件。

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Open a file from an external assembly?

从外部组件打开一个文件？

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Click the edit button as shown in Figure 2 to open file browser dialog box where you can choose an external editor.

在图2中，点击编辑按钮打开浏览对话框，你可以选择外部编辑器。

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