右键单击虚线区域，然后单击“表单属性”。
Right click in the dashed area, then click on Form Properties.
这两个错误都只与表单属性“email”有关(参见清单1)。
Both errors are only associated with the form property "email" (refer to Listing 1).
然后编写validate方法的代码，对用户输入的表单属性进行验证。
Then code the validate method to verify user inputs for the form properties.
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