U+11A90 "𑪐" Soyombo Final Consonant Sign M Unicode Character

U+11A90 "𑪐" Soyombo Final Consonant Sign M is a special diacritic mark used in the Soyombo script, an abugida historically employed for writing Mongolian and Tibetan religious texts, though it is rarely used today. It appears as a small combining mark attached to a base consonant character to indicate that the consonant serves as a final or closing element within a syllable, specifically representing the sound or role of a terminal consonant without an inherent vowel. This sign is part of the Soyombo script's Unicode block, encoded to preserve the intricate typographic needs of this ceremonial writing system, which was invented in the 17th century by the Mongolian monk and scholar Zanabazar.