In the 17th century, Zaya Pandita, a Khoshut Buddhist monk, devised a writing system, the clear script, based on the classical vertical Mongol script in order to phonetically capture the Oirat language.
Zaya Pandita devised a writing system based on the classical vertical Mongol script. This was in the 17th century. This was to phonetically capture the Oirat language. A writing system was the clear script. Zaya Pandita was a Khoshut Buddhist monk.