Zanabazar's square script is a horizontal Mongolian square script , an abugida developed by the monk and scholar Zanabazar based on the Tibetan alphabet to write Mongolian. It can also be used to write Tibetan language and Sanskrit as a geometric typeface.
It was re-discovered in 1801 and the script's applications during its using period are not known. It read left to right, and employed vowel diacritics above and below the consonant letters.