The type attribute of the PostalAddress element is actually an enumerated type, allowing a choice of one of four strings.

PostalAddress 元素的 type 属性实际上是枚举类型，它允许选择 4 个字符串之一。

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Surfacing the control for the type attribute of the PostalAddress element as an XForms select1 control by generating the following markup within the generated form.

通过在所生成的表单中生成下列标记，将用于PostalAddress元素的type属性的控件作为XForms select1控件来进行研究。

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