Object Class&Attributes 对象类和类属性
Listing 2 shows how to set the redaction attributes for this class object.
清单2显示了如何设置这个类对象的编校属性。
When you select an object class, you need to supply all the mandatory attributes included in the particular object class.
在选择对象类时，需要提供具体对象类中包含的所有必需属性。
In addition, you may also supply any of the optional attributes of the object class.
另外，还要提供对象类的可选属性。
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