- 万用字元 wànyòngzìyuán wildcard(computing) wildcard character, used primarily in Taiwan; see also [[通配符|通配符|tong1 pei4 fu2]]
- 字元集 zìyuánjí character seta complete set of characters used in computer systems or coding; character set
- 特殊字元 tèshūzìyuán special characterspecial character, such as a symbol or control code, used in computing and digital text