Monastic Sign Language
Monastic Sign Language是一种手语，主要分布在梵蒂冈。
手语是完整的自然语言，有自己的语法；它们与当地口语并不同源。
Monastic sign languages have been used in Europe from at least the tenth century by Christian monks, and some, such as Cistercian and Trappist sign, are still in use today—not only in Europe, but also in China, Japan, and the United States. Unlike deaf sign languages, they are better understood as forms of symbolic gestural communication rather than languages, and some writers have preferred to describe them as sign lexicons.
摘自英文维基百科 · Monastic sign languages · CC BY-SA 4.0