Indic Syllabic Category - Gemination Mark

Gemination Mark is a value that classifies characters used to explicitly indicate the doubling or lengthening of a consonant or vowel sound in certain South and Southeast Asian writing systems, such as those for Sanskrit, Pali, and Javanese. These marks typically appear as a small diagonal stroke or a dot attached above or beside a base character, signaling that the following consonant is to be pronounced as a geminate, or that a vowel is prolonged, without altering the inherent spelling. This classification helps distinguish these diacritical signs from other types of vowel modifiers or consonant joiners, ensuring that text rendering and phonetic processing, especially in transliteration and speech synthesis, treat them correctly as prosodic indicators rather than as independent letters or pure punctuation.