Unicode Block - Combining Diacritical Marks Supplement

Combining Diacritical Marks Supplement is a collection of additional spacing and nonspacing marks used to modify the pronunciation, tone, or phonetic value of base letters, primarily for scholarly and linguistic purposes. These marks include a wide range of diacritics such as hooks, strokes, curls, and superscript modifications, which are often employed in historical text reconstruction, dialectology, and the transcription of lesser-known languages. The block extends the original combining marks repertoire by providing glyphs for specialized phonetic notation, including those found in the International Phonetic Alphabet extensions and for indicating nasalization, palatalization, or other articulatory details not covered by earlier encoding ranges. Its design ensures that these marks can be layered seamlessly over letters in digital text, enabling precise representation of complex phonological systems.