Hi, Let me restate my question. If I get some text from an XML file using \XMLflush, is there a command in PLAIN TeX to replace some symbols (say, “&“ -> \letterampersand), on-a-fly without invoking perl, ruby, or lisp or ...? Why is there need in external script to do such an easy thing? And what I have to do to use Lua scripts, if possible? Cheers, Vyatcheslav