如果文本被截短，可以将鼠标指针悬浮于文本之上，一个弹出窗口将会为您显示完整的文本(图5)。

If the text is truncated, you can hover the mouse pointer over the text and a pop up window will show you the full title text (Figure 5).

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如果一个指针指向一个不在图中的对象，那么此对象就是一个不可到达的对象，垃圾收集器就将短弱引用表相应的槽置空。

If a pointer pointing to an object not in the graph, then the object is not a reachable object, and then garbage collector sets the slot to null in the short weak reference table.

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