Zhuyin Fuhao, often shortened as zhuyin and commonly called bopomofo, is a type of sound-based writing for the Chinese language. In Chinese, "bo", "po", "mo" and "fo" are the first four of the conventional ordering of available syllables. As a result, the four syllables together have been used to refer to many different phonetic systems. For Chinese speakers who were first introduced to the Zhuyin system, "bopomofo" means zhuyin fuhao.
The zhuyin characters are represented in typographic fonts as if drawn with an ink brush (as in Regular Script). They are encoded in Unicode in the bopomofo block, in the range U+3105 ... U+312D.