The only collation URI defined by XPath 2.0 is for the Unicode code point collation, according to which strings are compared by the Unicode code points of their individual characters.
XPath 2.0仅定义了一种排序uri，即Unicode代码点排列法，字符串根据每个字符的Unicode代码点进行比较。
The only collation URI defined by XPath 2.0 is for the Unicode code point collation, according to which strings are compared by the Unicode code points of their individual characters.
XPath 2.0仅定义了一种排序uri，即Unicode代码点排列法，字符串根据每个字符的Unicode代码点进行比较。
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