So 1993 The first program to be converted to UTF was the C Compiler. There are two levels of conversion. On the syntactic level, input to the C compiler is UTF

So 1993 The first program to be converted to UTF was the C Compiler. There are two levels of conversion. On the syntactic level, input to the C compiler is UTF; on the semantic level, the C language needs to define how compiled programs manipulate the UTF set. http://plan9.bell-labs.com/sys/doc/utf.html http://plan9.bell-labs.com/sys/doc/utf.html Plan9, what Unix did next.