CCC29 Value in Canonical Combining Class Unicode Property

CCC29 is a specific numeric value assigned to certain characters in text processing, indicating they belong to a particular class of diacritical marks that attach to a base letter without reordering during normalization. This value, which sits in the middle range of combining class numbers, represents marks that are positioned above the base character, such as some accents or vowel signs, and are applied in a fixed sequence. When text is canonically normalized, characters with CCC29 are never swapped with other combining marks of the same or lower class, ensuring consistent rendering across systems. This class is distinct from higher values that denote reordering marks, like those for Hebrew or Arabic vowel points, and from lower values for marks below the base. In practical terms, CCC29 helps software correctly sort and compare text by preserving the intended order of these superscript diacritics, which is crucial for languages using multiple stacked accents.