DerivedCombiningClass.txt
Last updated at 8:21 am UTC on 10 December 2015
a file of the Unicode Character Database which shows the combining class value for a Unicode code point.
http://www.unicode.org/Public/8.0.0/ucd/extracted/DerivedCombiningClass.txt
Default value is that no reordering should take place (see Canonical Ordering Algorithm).