空字符
NUL
空字符串
empty string
空字段
null field
均衡字符
proportional font
开始字符
bebinning character
可打印字符
printable character
可更换字符的打印字条
interchangeable type bar
可识别字符信
recognizable character set
可选连字符
optional hyphens
可抑制字符帧
suppressible character frame
肯定字符
acknowledge character; acknowledgment character
空白控制字符
blank control character
空位字符
blank character
空转字符
idle character
控制字符
ASCII control character ASCII; control character
块校验字符
BCC; block check character
宽位字符
wide character
扩充字符
extension character
扩展字符格式
extended character format
扩展字符集
extended character set