Indic Syllabic Category - Modifying Letter

Modifying Letter is a category for characters that serve as diacritic-like marks attached to a base consonant or vowel in Indic scripts, often altering the inherent vowel, nasalization, or tone without forming an independent syllable. These marks include vowel signs, anusvara, visarga, and other superscript or subscript symbols, and they function phonologically as part of the syllable’s core, rather than as standalone letters. In rendering and text processing, they are treated as dependent signs that combine with a preceding consonant, affecting shaping, reordering, and phonetic value, while remaining distinct from fully independent vowels or consonants.