允许XSLT元素带有附加属性，只要那些属性位于其它名称空间，这样样式表处理器知道自己可以忽略它们。
XSLT elements are allowed to carry additional attributes, as long as those attributes are in a different namespace so the stylesheet processor knows it can ignore them.
大多数向rss或atom提要附加了xslt样式表的Web站点管理员都会提供指导信息，说明如何安装一个新的聚合器然后订阅其提要。
Most webmasters who attach an XSLT stylesheet to their RSS or Atom feed include instructions on how to install a news aggregator and subsequently subscribe to their feed.
如果想要使用不同的样式表执行附加转换，可以重用TransformerFactory，但必须创建不同的Transformer实例，以与新样式表连接。
If you want to perform additional transformations using a different stylesheet, you can reuse the TransformerFactory but must create a different Transformer instance, tied to the new stylesheet.
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