输入属性页类的类型标识；标识应与类型名匹配。
Enter a type identification for the property page class; should match the type name.
指定控件类和属性页类的名称、类型名称和控件的类型标识符。
Specify the names for the control class and property page class, the type names, and type identifiers for your control.
元类被原型所扩展，是在属性视图 Extensions 标检页完成的。
The metaclasses being extended by the stereotype are specified on the Extensions tab in the Properties view.
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