U+11A5B "𑩛" Soyombo Vowel Length Mark Unicode Character

U+11A5B "𑩛" Soyombo Vowel Length Mark is a diacritical mark used in the Soyombo script, an abugida developed in the late 17th century by the Mongolian monk and scholar Zanabazar. This specific mark is placed above or attached to a vowel-carrying consonant letter to indicate that the inherent vowel should be pronounced with a longer duration, distinguishing meaning in languages such as Mongolian and Tibetan. It belongs to the Soyombo Unicode block, which was added to the standard to support historical and liturgical texts, preserving the script's role in Buddhist and cultural documentation.