https://ko.wikipedia.org/wiki/GNU_bison
https://en.wikipedia.org/wiki/GNU_Bison
https://ja.wikipedia.org/wiki/Bison
https://en.wikipedia.org/wiki/GNU_Bison
https://ja.wikipedia.org/wiki/Bison
https://ko.wikipedia.org/wiki/Yacc
https://en.wikipedia.org/wiki/Yacc
https://ja.wikipedia.org/wiki/Yacc
https://en.wikipedia.org/wiki/Yacc
https://ja.wikipedia.org/wiki/Yacc
}
cmp: 렉스,Lex or 렉스,lex / 플렉스,flex ??? chk =,lex =,flex { Lex_(software) = https://en.wikipedia.org/wiki/Lex_(software) }