In addition to the group membership attribute name, you can also specify the scope of the group membership attribute.

除指定组成员关系属性名之外，您还可以指定组成员关系属性的范围。

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You can turn check boxes into radio buttons by specifying a radiogroup attribute whose value is the name of the group of mutually exclusive buttons.

通过指定radiogroup属性，可以将复选框转换为单选按钮，这个属性的值是互相排斥的按钮的组名。

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CommandGroupExtension specifies the command group name in the name attribute and the list of command names in the commands attribute.

CommandGroupExtension指定名称属性中的命令组名称和命令属性中的命令名称列表。

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