陶喆
An additional problem is caused when encodings are missing characters, which is common with rare or antiquated characters that are still used in personal or place names. Examples of this are Taiwanese politicians Wang Chien-shien ()'s "煊", Yu Shyi-kun ()'s "堃" and singer David Tao ()'s "喆" missing in Big5, ex-PRC Premier Zhu Rongji ()'s "镕" missing in GB2312, copyright symbol "©" missing in GBK.