A frame element provides a consistent place for a diagram's label, while providing a graphical boundary for the diagram.

当为图提供图形化边界时，一个框架元件为图的标签提供一致的位置。

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Notice that in Figure 2 the diagram's label begins with the letters "sd," for Sequence Diagram.

注意在图 2 中，对于序列图，图的标签由文字“sd”开始。

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If we add the label provider to the diagram for the tree viewer, we get Figure 9.

如果我们将标签提供程序添加到树查看器图中，就会得到图9。

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