Canonical Combining Class - CCC132

CCC132 is a specific value indicating that a character is a subscript or superscript, typically used in mathematical or phonetic notation, and it forces the character to be positioned below or above the base character it follows during text rendering. This combining class value ensures that such marks are placed in a fixed, non-reordering position relative to their base, meaning they do not interact with other combining marks for reordering purposes. It applies to characters like subscript digits or superscript letters, which must maintain their vertical offset regardless of surrounding diacritics or marks. In practice, CCC132 helps text processors and fonts apply consistent placement for these specialized notations, preventing them from being shifted incorrectly when multiple combining characters are present. This value is distinct from other combining classes that allow for mark reordering or stacking, as it locks the sub/super positioning.