允许用户使用定制排序、过滤和查询表达式解析扩展搜索行为。

Allows users to extend the searching behavior using custom sorting, filtering, and query expression parsing.

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在XPath表达式中排序。

Sorting within XPath expressions.

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use - when测试还可以帮助选择定序法，只要包含的表达式告诉您可用何种排序法。

A use-when test can also help you choose collations, as long as it includes an expression that will tell you which collations are available.

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