2.2.11 [W3C-XSLT] Section 10, Sorting

C0015:

The specification states:

 NOTE:It is possible for two conforming XSLT processors not to sort exactly the
 same. Some XSLT processors may not support some languages. Furthermore, there may
 be variations possible in the sorting of any particular language that are not
 specified by the attributes on xsl:sort, for example, whether Hiragana or Katakana
 is sorted first in Japanese. Future versions of XSLT may provide additional
 attributes to provide control over these variations. Implementations may also use
 implementation-specific namespaced attributes on xsl:sort for this.

MSXML3 and MSXML6

The processor does not use implementation-specific namespaced attributes on xsl:sort.

C0016:

The specification states:

 NOTE:It is recommended that implementers consult [UnicodeCollationAlgorithm] 
 for information on internationalized sorting.

MSXML3 and MSXML6

The processor uses the functions in [MSDN-NLS] in Windows to sort Unicode strings.