注意在图 2 中，对于序列图，图的标签由文字“sd”开始。

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

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当然你还需要做很多功夫，例如把关键字置于你的标题标签、标题、编辑标签并让它们渗透在你的文字内容中。

Certainly do the due diligence - have your keywords in your title tag, heading, alt tags, and interspersed in your copy.

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在该方案中，classname元素的特殊处理可能会在输出中生成一个文字“class”标签以节省一点输入并生成一致的标签。

In the scenario, special processing for the classname element might generate a literal "class" label in the output to save some typing and produce consistent labels.

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