logical parent pointer [计] 逻辑双亲指针
The container element, as just mentioned, is the logical parent of the topic element.
正如刚才所述，container 元素是 topic 元素的逻辑父元素。
Note that the logical parent of an element can potentially change depending on your application's functionality, and keeping the value of this property will not reflect that change.
请注意，项目的逻辑父项目有可能视应用程式的功能而变更，且保留这个属性的值并不会反映该变更。
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